SELECTED PUBLICATIONS

　Books

• 秋山守・有冨正憲監修，「新しい気液二相流数値解析（多次元流動解析）」，コロナ社 (2002).

• 大中逸雄・大川富雄・岡本達幸・高城敏美・平田好則・山内勇，「輸送現象論」，大阪大学出版会 (2003).

• 日本混相流学会編，「混相流ハンドブック」，朝倉書店 (2004).

　Thesis

• 二流体モデルに対する高次風上差分法の適用性に関する研究，東京工業大学 (1995).

　Papers

1989-1994

• Ryoichi Takahashi, Tomio Okawa, Numerical experiment on interaction of solitons describing recurrence of initial state, Computational Mechanics, Vol. 5, pp. 273-281 (1989).

• 大川富雄・冨山明男, 二相流数値解析における質量保存式の選択が数値解に及ぼす影響, 混相流, Vol. 6, No. 4, pp. 395-405 (1992).

• 大川富雄・冨山明男, 二流体モデルに対する高次風上差分法の適用性（第１報：線形モデル方程式に基づく考察）, 混相流, Vol. 7, No. 3, pp. 241-249 (1993).

• 冨山明男・片岡勲・大川富雄・平野雅司, 非圧縮性多次元二流体モデルの数値解法（構成方程式の評価に適する解法）, 機械学会論文集B編, Vol. 59, No. 566, pp. 3003-3008 (1993).

• Tomio Okawa, Akio Tomiyama, Effects of mass equations for two-phase flow analysis on numerical solutions, Proceedings of 2nd International Conference on Nuclear Engineering, Vol. 1, pp. 23-29 (1993).

• 大川富雄・冨山明男, 二流体モデルに対する高次風上差分法の適用性（第２報：二流体モデル方程式に基づく考察）, 混相流, Vol. 8, No. 2, pp. 126-134 (1994).

• 大川富雄・冨山明男, 二流体モデルに対する高次風上差分法の適用性（第３報：数値解の精度に関する検討）, 混相流, Vol. 8, No. 4, pp. 291-300 (1994).

• Tomio Okawa, Akio Tomiyama, Applicability of high-order upwind difference methods to two-fluid model (Examination based on a linear model equation), Proceedings of ASME Fluids Engineering Division Summer Meeting, ASME-FED, Vol. 185, pp. 209-215 (1994).

• Fumio Inada, Tomio Okawa, Thermo-hydraulic instability of natural circulation BWRs (Explanation on instability mechanisms at start-up by homogeneous and thermo-dynamic equilibrium model considering flashing effect), Proceedings of International Conference on New Trends in Nuclear System Thermohydraulics, pp. 187-193 (1994).

1995

• Tomio Okawa, Akio Tomiyama, Applicability of high-order upwind difference methods to the two-fluid model, Advances in Multiphase Flow, Elsevier, pp. 227-240 (1995).

• Tomio Okawa, Akio Tomiyama, Applicability of high-order upwind difference methods to the two-fluid model, Proceedings of 2nd International Conference on Multiphase Flow, NU, pp. 15-22 (1995).

• Tomio Okawa, Fumio Inada, Gas-liquid two-phase flow in large space (Basic examination based on a two-dimensional, air-water experiment), Proceedings of 3rd International Conference on Nuclear Engineering, S106-2, pp. 137-142 (1995).

1996

• Goichi Matsui, Hideaki Monji, Nobukazu Tanaka, Tomio Okawa, Kiyoshi Kanzaki, Numerical simulation of champagne effect in compressed air energy storage system, Proceedings of the Japan-U.S. Seminar on Two-Phase Flow Dynamics, pp. 163-169 (1996).

• Hiroshige Kumamaru, Iwao Ohtsu, Hideo Murata, Yutaka Kukita, Mamoru Akiyama, Hirotada Ohashi, Masaharu Goto, Nobukazu Tanaka, Tomio Okawa, Yuji Ono, Toshiyuki Hatta, Kazuyuki Yoneyama, Compressed air energy storage system two-phase flow experiment, Proceedings of 4th International Conference on Nuclear Engineering, Vol. 1, Part B, pp. 669-674 (1996).

• Tomio Okawa, Akio Tomiyama, Effects of wall friction force on numerical stability of a two-fluid model, Proceedings of ASME Fluids Engineering Division Summer Meeting, ASME-FED, Vol. 236, pp. 81-86 (1996).

1997

• Tomio Okawa, Akio Tomiyama, Effects of source terms and virtual mass force on mathematical nature of a two-fluid model, Proceedings of 2nd Japanese-German Symposium on Multi-Phase Flow, pp. 311-322 (1997).

• Tomio Okawa, Kimitoshi Yoneda, Akira Yasuo, Flow structure of bubble-induced natural-circulation, Proceedings of 5th International Conference on Nuclear Engineering (CD-ROM), pp. 1-10 (1997).

• Kimitoshi Yoneda, Tomio Okawa, Akira Yasuo, Structure of natural-circulation bubbly flow, Proceedings of 2nd Japanese-German Symposium on Multi-Phase Flow, pp. 1-9 (1997).

1998

• 大川富雄・田中伸和・山本亮介・松井剛一・文字秀明, CAESシャンペン現象の数値解析（第１報：解析モデルの開発と検証）, 機械学会論文集B編, Vol. 64, No. 621, pp. 1398-1404 (1998).

• 大川富雄・田中伸和・山本亮介・松井剛一・文字秀明, CAESシャンペン現象の数値解析（第２報：実機評価）, 機械学会論文集B編, Vol. 64, No. 628, pp. 3964-3969 (1998).

• 大川富雄・冨山明男, 生成項および仮想質量力が二流体モデルの数学的性質に及ぼす影響（第１報：重力項の影響）, 機械学会論文集B編, Vol. 64, No. 624, pp. 2472-2477 (1998).

• Tomio Okawa, Kimitoshi Yoneda, Yuzuru Yoshioka, New interfacial drag force model including effect of bubble wake (I), Model development for steam-water bubbly flow in large-diameter pipes, Journal of Nuclear Science and Technology, Vol. 35, No. 12, pp. 895-904 (1998).

• Tomio Okawa, Nobukazu Tanaka, Ryosuke Yamamoto, Goichi Matsui, Hideaki Monji, Numerical simulation of CAES champagne effect based on a two-fluid model, Proceedings of 1st European-Japanese Two-Phase Flow Group Meeting, pp. 1-8 (1998).

• Tomio Okawa, Akio Tomiyama, Effects of source terms and virtual mass force on mathematical characteristics of a two-fluid model, Proceedings of 3rd International Conference on Multiphase Flow (CD-ROM), pp. 1-8 (1998).

• Kimitoshi Yoneda, Tomio Okawa, Akira Yasuo, Structure of steam-water two-phase flow in a vertical pipe, Proceedings of 6th International Conference on Nuclear Engineering (CD-ROM), pp. 1-14 (1998).

1999

• 大川富雄・冨山明男, 生成項および仮想質量力が二流体モデルの数学的性質に及ぼす影響（第２報：数学的性質の評価）, 機械学会論文集B編, Vol. 64, No. 629, pp. 86-91 (1999).

• Tomio Okawa, Kimitoshi Yoneda, Shirong Zhou, Hiroaki Tabata, New interfacial drag force model including effect of bubble wake (II), Model validation using experimental data of steam-water bubbly flow in large-diameter pipes, Journal of Nuclear Science and Technology, Vol. 36, No. 11, pp. 1030-1040 (1999).

• Tomio Okawa, Kimitoshi Yoneda, Yuzuru Yoshioka, New interfacial drag force model for steam-water bubbly flow in large-diameter pipes, Proceedings of 7th International Conference on Nuclear Engineering (CD-ROM), pp. 1-10 (1999).

• Yumiko Suzuki, Masanori Aritomi, Tomio Okawa, Numerical simulation of rising bubbles using an Euler-Lagrange method, Proceedings of 9th International Topical Meeting on Nuclear Reactor Thermal-Hydraulics (CD-ROM), pp. 1-10 (1999).

• Tomio Okawa, Isao Kataoka, Characteristics and stability of a two-fluid model for bubbly two-phase flow, Proceedings of 8th International Conference on Nuclear Engineering (CD-ROM), pp. 1-12 (1999).

2000

• 大川富雄・片岡勲, 気泡流条件における二流体モデルの数学的適切性, 機械学会論文集B編, Vol. 66, No. 646, pp. 1281-1287 (2000).

• Tomio Okawa, Yumiko Suzuki, Isao Kataoka, Masanori Aritomi, Michitsugu Mori, Numerical implementation of interfacial drag force for one-dimensional, two-way bubble tracking method, Journal of Nuclear Science and Technology, Vol. 37, No. 4, pp. 387-396 (2000).

• Tsuyoshi Kitahara, Tomio Okawa, Kimitoshi Yoshida, Tadayoshi Matsumoto, Isao Kataoka, Numerical analysis of the flow and heat transfer characteristics of annular-dispersed flows in annuli using a multi-fluid model, Proceedings of 4th JSME-KSME Thermal Engineering Conference (CD-ROM), pp. 1-5 (2000).

• Tomio Okawa, Tsuyoshi Kitahara, Kenji Yoshida, Tadayoshi Matsumoto, Isao Kataoka, Numerical simulation of annular-dispersed flows in round tubes and annuli using a multi-fluid model, Proceedings of 3rd UK-Japan Seminar on Multiphase Flow, pp. 1-6 (2000).

• Tomio Okawa, Isao Kataoka, New correlation for droplet flow rate in fully-developed annular-dispersed flow, Proceedings of 2nd Japan-Korea Symposium on Nuclear Thermal-Hydraulics and Safety, pp. 444-449 (2000).

• Isao Kataoka, Masayoshi Muta, Saeyun Kim, Kenji Yoshida, Tadayoshi Matsumoto, Tomio Okawa, Analysis of void fraction and turbulence structure in boiling two-phase flow in various channel geometry, Proceedings of 2nd Japan-Korea Symposium on Nuclear Thermal-Hydraulics and Safety, pp. 430-437 (2000).

• K. Yoshida, S. Arai, T. Matsumoto, T. Okawa, I. Kataoka, Experimental studies on the effect of liquid film to gas-phase turbulence modification in two-phase annular flow, Proceedings of 2nd Japan-Korea Symposium on Nuclear Thermal-Hydraulics and Safety, pp. 666-670 (2000).

• Kimitoshi Yoneda, Akira Yasuo, Tomio Okawa, Shirong Zhou, Flow structure of developing steam-water two-phase flow in a large-diameter pipe, Proceedings of 8th International Conference on Nuclear Engineering (CD-ROM), pp. 1-8 (2000).

• Tomio Okawa, Isao Kataoka, Tsuyoshi Kitahara, Kenji Yoshida, Tadayoshi Matsumoto, Mechanistic correlation of entrainment fraction in equilibrium annular flow, Proceedings of 2nd Japanese-European Two-Phase Flow Group Meeting, pp. 1-8 (2000).

• Isao Kataoka, Nobuhiko Miyamoto, Takashi Kuramoto, Tadayoshi Matsumoto, Tomio Okawa, Kenji Yoshida, A study on flow behavior of gas-liquid two-phase slug flow in micro channel, Proceedings of 2nd Japan-Korea Symposium on Nuclear Thermal-Hydraulics and Safety, pp. 438-443 (2000).

• Isao Kataoka, M. Muta, S. Kim, S., Yoshida, K., Matsumoto, T., Okawa, T., Analysis and prediction of DNB based on turbulence structure in boiling two-phase flow, Proceedings of 3rd International Symposium on Turbulence, Heat and Mass Transfer, pp. 899-906 (2000).

• Tomio Okawa, Koji Araki, Isao Kataoka, Michitsugu Mori, On modeling of interfacial forces for a two-way bubble tracking method, Proceedings of ASME Fluids Engineering Division Summer Meeting (CD-ROM), ASME-FED, Vol. 251, pp. 1-6 (2000).

• Kenji Yoshida, Tomio Okawa, Tsuyoshi Kitahara, Tadayoshi Matsumoto, Isao Kataoka, Multi-fluid modeling of annular-dispersed two-phase flow in various channel geometry, Proceedings of US-Japan Joint Seminar of Two-Phase Flow Dynamics, pp. 299-303 (2000).

2001

• Tomio Okawa, Koji Araki, Kenji Yoshida, Tadayoshi Matsumoto, Isao Kataoka, Michitsugu Mori, M., Numerical simulation of single bubbles located in turbulent flow in vertical pipes using bubble tracking method, Japanese Journal of Multiphase Flow, Vol. 15, No. 2, pp. 165-174 (2001).

• Masahiko Morita, Yoshitomo Watanabe, Tomio Okawa, Hiroshi Saiki, Photosynthetic productivity of conical helical tubular photobioreactors incorporating chlorella sp. under various culture medium flow conditions, Biotechnology and Bioengineering, Vol. 74, No. 2, pp. 136-144 (2001).

• Tsuyoshi Kitahara, Tomio Okawa, Kenji Yoshida, Tadayoshi Matsumoto, Isao Kataoka, Improved correlations for annular flow simulation in annuli based on a one-dimensional multi-fluid model, Proceedings of 4th International Conference on Multiphase Flow (CD-ROM), pp. 1-8 (2001).

• Tomio Okawa, Minoru Nakazumi, Kenji Yoshida, Tadayoshi Matsumoto, Isao Kataoka, Michitsugu Mori, On modeling of interfacial forces acting on single bubbles in a turbulent flow field, Proceedings of 4th International Conference on Multiphase Flow (CD-ROM), pp. 1-12 (2001).

• Tomio Okawa, Tsuyoshi Kitahara, Kenji Yoshida, Tadayoshi Matsumoto, Isao Kataoka, A simple correlation of droplet entrainment in annular-dispersed two-phase flows, Proceedings of 4th International Conference on Multiphase Flow (CD-ROM), pp. 1-12 (2001).

• Kimitoshi Yoneda, Akira Yasuo, Tomio Okawa, Bubble characteristics of steam-water two-phase flow in a large-diameter pipe, Proceedings of 4th International Conference on Multiphase Flow (CD-ROM), pp. 1-11 (2001).

• Tomio Okawa, Minoru Nakazumi, Kenji Yoshida, Tadayoshi Matsumoto, Isao Kataoka, Michitsugu Mori, Interfacial forces acting on a bubble in vertical upflow, Proceedings of ASME Fluids Engineering Division Summer Meeting (CD-ROM), ASME-FED, Vol. 254, pp. 1-6 (2001).

• Tomio Okawa, Kazuhiro Torimoto, Masanori Nishiura, Tomoe Tanaka, Isao Kataoka, Michitsugu Mori, Experimental observation of bubble motion in a vertical pipe, Proceedings of UK-Japan Seminar on Multiphase Flow (CD-ROM), pp. 1-5 (2001).

• Tadayoshi Matsumoto, Yoshihiro Tsujita, Minoru Nakazumi, Tomio Okawa, Isao Kataoka, A study on bubbly two-phase flow in transient conditions, Proceedings of UK-Japan Seminar on Multiphase Flow (CD-ROM), pp. 1-4 (2001).

2002

• Tomio Okawa, Tsuyoshi Kitahara, Kenji Yoshida, Tadayoshi Matsumoto, Isao Kataoka, New entrainment rate correlation in annular two-phase flow applicable to wide range of flow condition, International Journal of Heat and Mass Transfer, Vol. 45, pp. 87-98 (2002).

• Tomio Okawa, Isao Kataoka, Michitsugu Mori, Numerical simulation of lateral distribution in turbulent upward bubbly two-phase flows, Nuclear Engineering and Design, Vol. 213, Issues 2-3, pp. 183-197 (2002).

• Masanori Naitoh, Takashi Ikeda, Koji Nishida, Tomio Okawa, Isao Kataoka, Critical power analysis with mechanistic models for nuclear fuel bundles (1st report, Models and verifications for boiling water reactor application), Journal of Nuclear Science and Technology, Vol. 39, No. 1, pp. 40-52 (2002).

• Kimitoshi Yoneda, Akira Yasuo, Tomio Okawa, Flow structure and bubble characteristics of steam-water two-phase flow in a large-diameter pipe, Nuclear Engineering and Design, Vol. 217, pp. 267-281 (2002).

• Kimitoshi Yoneda, Akira Yasuo, Tomio Okawa, Bubble characteristics of steam-water two-phase flow in a large-diameter pipe, Experimental Thermal and Fluid Science, Vol. 26, pp. 669-676 (2002).

• Tomio Okawa, Saeyun Kim, Isao Kataoka, Masanori Naitoh, Prediction of dryout heat flux using film flow model, Thermal Science and Engineering, Vol. 10, No. 4, pp. 33-34 (2002).

• Koichi Kondo, Kenji Yoshida, Tadayoshi Matsumoto, Tomio Okawa, Isao Kataoka, Flow patterns of gas-liquid two-phase flow in round tube with sudden expansion, Proceedings of 10th International Conference on Nuclear Engineering (CD-ROM), Paper No. 22154, pp. 1-8 (2002).

• Tomio Okawa, Saeyun Kim, Isao Kataoka, Masanori Naitoh, Mechanistic prediction of dryout heat flux in annular two-phase flow, Proceedings of 10th International Conference on Nuclear Engineering (CD-ROM), Paper No. 22282, pp. 1-8 (2002).

• Tomio Okawa, Kazuhiro Torimoto, Masanori Nishiura, Isao Kataoka, Michitsugu Mori, Effects of temperature and containing wall on rise velocities of single bubbles in a vertical circular pipe, Proceedings of 10th International Conference on Nuclear Engineering (CD-ROM), Paper No. 22492, pp. 1-8 (2002).

• Kazuhiro Torimoto, Masanori Nishiura, Tomoe Tanaka, Tomio Okawa, Isao Kataoka, Measurements of bubble rise characteristics in various temperatures and liquid velocities, Proceedings of 10th International Conference on Nuclear Engineering (CD-ROM), Paper No. 22759, pp. 1-8 (2002).

• Tomio Okawa, Tomoe Tanaka, Kazuhiro Torimoto, Masanori Nishiura, Isao Kataoka, Experimental observation of single bubble rise characteristics in various situations, Proceedings of ASME Fluids Engineering Division Summer Meeting (CD-ROM), Paper No. 31149, pp. 1-6 (2002).

• Tomio Okawa, Isao Kataoka, Masanori Naitoh, Prediction of critical heat flux in vertical annular flow, Proceedings of the 5th JSME-KSME Fluids Engineering Conference (CD-ROM), Nagoya, pp. 1-6 (2002).

• Msanori Nishiura, Kazuhiro Torimoto, Tomio Okawa, Isao Kataoka, An experimental study on bubble behavior in a vertical round tube, Proceedings of the 5th JSME-KSME Fluids Engineering Conference (CD-ROM), Nagoya, pp. 1-6 (2002).

• M. Murase, Y. Yagi, A. Nakamura, Y. Fujii, I. Kataoka, T. Okawa, Interfacial drag in two-phase flow analysis for secondary side in steam generator, Proceedings of Third Korea-Japan Symposium on Nuclear Thermal Hydraulics and Safety (CD-ROM), pp. 1-6 (2002).

• Isao Kataoka, Takashi Kuramoto, Masahiro Awane, Tadayoshi Matsumoto, Tomio Okawa, Kenji Yoshida, Flow characteristics and pressure drop of gas-liquid slug flow in micro channel, Proceedings of Fourth Pacific Rim Thermal Science and Energy Engineering Workshop, pp. 130-135 (2002).

2003

• Tomio Okawa, Tomoe Tanaka, Isao Kataoka, Michitsugu Mori, Temperature effect on single bubble rise characteristics in stagnant distilled water, International Journal of Heat and Mass Transfer, Vol. 46, Issue 5, pp. 903-913 (2003).

• Tomio Okawa, Akio Kotani, Isao Kataoka, Masanori Naito, Prediction of critical heat flux in annular flow using a film flow model, Journal of Nuclear Science and Technology, Vol. 40, No. 6, pp. 388-396 (2003).

• Tomio Okawa, Akio Kotani, Isao Kataoka, Masanori Naito, Prediction of dryout heat flux in vertical round tubes with uniform and non-uniform heating, Proceedings of Tenth International Topical Meeting on Nuclear Reactor Thermal Hydraulics, Seoul, Korea (2003).

• Tomio Okawa, Kazuhiro Torimoto, Masanori Nishiura, Isao Kataoka, Michitsugu Mori, Bubble behavior after the detachment from nucleation site in vertical upflow boiling, Proceedings of Tenth International Topical Meeting on Nuclear Reactor Thermal Hydraulics, Seoul, Korea (2003).

• Tomio Okawa, Akio Kotani, Isao Kataoka, Masanori Naito, Numerical prediction of dryout heat flux in vertical uniformly heated round tubes, Proceedings of International Conference on Global Environment and Advanced Nuclear Power Plants, Kyoto, Japan (2003).

• Tomio Okawa, Tatsuhiro Ishida, Isao Kataoka, Michitsugu Mori, An experimental study on bubble rise path after the departure from a nucleation site in vertical upflow boiling, Proceedings of Third European-Japanese Two-Phase flow Group Meeting, Certosa di Pontignano, Italy (2003).

2004

• Tomio Okawa, Akio Kotani, Isao Kataoka, Masanori Naito, Prediction of the critical heat flux in annular regime in various vertical channels, Nuclear Engineering and Design, Vol. 229, Issue 2-3, pp. 223-236 (2004).

• Tomio Okawa, Akio Kotani, Isao Kataoka, Experiments for equilibrium entrainment fraction in a small vertical tube, Proceedings of Fifth International Conference on Multiphase Flow, Yokohama, Japan (2004).

• Koichi Kondo, Kenji Yoshida, Tomio Okawa, Isao Kataoka, Bubble distributions of upward gas-liquid two-phase flow in a vertical pipe with sudden expansion, Proceedings of Fifth International Conference on Multiphase Flow, Yokohama, Japan (2004).

• Tomio Okawa, Akio Kotani, Isao Kataoka, Experiments for deposition rate of droplets in a small diameter tube, Proceedings of Sixth International Topical Meeting on Nuclear Reactor Thermal Hydraulics, Operation and Safety, Nara, Japan (2004).

• Tomio Okawa, Akio Kotani, Isao Kataoka, Correlation for the deposition rate of droplets in vertical upward annular two-phase flow, Proceedings of Sixth International Topical Meeting on Nuclear Reactor Thermal Hydraulics, Operation and Safety, Nara, Japan (2004).

• Koichi Kondo, Kenji Yoshida, Tomio Okawa, Isao Kataoka, Local measurement and numerical calculation on turbulent two-phase flow in a vertical pipe with sudden expansion, Proceedings of Sixth International Topical Meeting on Nuclear Reactor Thermal Hydraulics, Operation and Safety, Nara, Japan (2004).

• Hisashi Ninokata, Michio Sadatomi, Tomio Okawa, Akimi Serizawa, Kaichiro Mishima, Seiichi Koshizuka, Akio Tomiyama, Yasushi Yamamoto, Yoshiro Kudo, Akitoshi Hotta, Koji Nishida, Noriyuki Shirakawa, Current status of generalized boiling transition model development applicable to a wide variety of fuel bundle geometry, Proceedings of Sixth International Topical Meeting on Nuclear Reactor Thermal Hydraulics, Operation and Safety, Nara, Japan (2004).

• Tomio Okawa, Akio Kotani, Naoya Shimada, Isao Kataoka, Effects of a flow obstacle on the deposition rate of droplets in annular two-phase flow, Journal of Nuclear Science and Technology, Vol. 41, No. 9, pp. 871-879 (2004).

• Koichi Kondo, Kenji Yoshida, Tomio Okawa, Isao Kataoka, Prediction of void fraction distribution for turbulent bubble flow in a vertical pipe with sudden expansion, Proceedings of Third International Symposium on Two-Phase Flow Modelling and Experimentation, Pisa, Italy (2004).

• Tomio Okawa, Tatsuhiro Ishida, Isao Kataoka, M. Mori, Bubble rise characteristics after the departure from a nucleation site in water saturated and subcooled flow boiling, Proceedings of Third International Symposium on Two-Phase Flow Modelling and Experimentation, Pisa, Italy (2004).

• 近藤宏一・吉田憲司・大川富雄・片岡勲，急拡大を伴う鉛直円管内空気−水気泡流に対する1次元2流体モデルの適用性，Transaction of Atomic Energy Society of Japan, Vol. 3, No. 4, pp. 313-353 (2004).

2005

• Tomio Okawa, Tatsuhiro Ishida, Isao Kataoka, Michitsugu Mori, An experimental study on bubble rise path after the departure from a nucleation site in vertical upflow boiling, Experimental Thermal and Fluid Science, Vol. 29, Issue 3, pp. 287-294 (2005).

• Tomio Okawa, Akio Kotani, Isao Kataoka, Experiments for liquid phase mass transfer rate in annular regime for a small vertical tube, International Journal of Heat and Mass Transfer, Vol. 48, Issues 3-4, pp. 585-598 (2005).

• Tomio Okawa, Tatsuhiro Ishida, Isao Kataoka, Michitsugu Mori, Bubble rise characteristics after the departure from a nucleation site in vertical upflow boiling of subcooled water, Nuclear Engineering and Design, Vol. 235, 1149-1161 (2005).

• 近藤宏一・吉田憲司・松本忠義・大川富雄・片岡勲，急拡大を伴う鉛直円管内を上昇する気泡流のボイド率分布，機械学会論文集B編, Vol. 71, No. 703, pp. 796-803 (2005).

• Tomio Okawa and Isao Kataoka, Correlations for the mass transfer rate of droplets in vertical upward annular flow, International Journal of Heat and Mass Transfer (accepted).

• Tomio Okawa, Tatsuhiro Ishida, Isao Kataoka, Michitsugu Mori, On the rise paths of single vapor bubbles after the departure from nucleation sites in subcooled upflow boiling, International Journal of Heat and Mass Transfer (accepted).

• Koichi Kondo, Kenji Yoshida, Tomio Okawa, Isao Kataoka, Prediction of void fraction distribution in sudden expansion channel, Proceedings of 6th KSME-JSME Thermal and Fluids Engineering Conference, Cheju, Korea (2005-3).

• Tomio Okawa, Tatsuhiro Ishida, Isao Kataoka, Michitsugu Mori, On the growth of vapor void fraction with wall heat flux in subcooled upward flow boiling, Proceedings of 6th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics, Matsushima, Miyagi, Japan (2005-4).

• Koichi Kondo, Kenji Yoshida, Tomio Okawa, Isao Kataoka, A study on bubble motion in turbulent flow field for predicting multi-dimensional void fraction distribution in sudden expansion channel, Proceedings of 13th International Conference on Nuclear Engineering, ICONE13-50644, Beijing, China (2005-5).

• Tomio Okawa, Toshiaki Mori, Isao Kataoka, An experimental study on the collision of water drops with a plane water surface, Proceedings of 13th International Conference on Nuclear Engineering, ICONE13-50724, Beijing, China (2005-5).

• Tomio Okawa, Naoya Shimada, Akio Kotani, Isao Kataoka, An experimental study on the mass transfer rate of droplets in annular two-phase flow, Proceedings of 13th International Conference on Nuclear Engineering, ICONE13-50726, Beijing, China (2005-5).

• Tomio Okawa, Toshiaki Mori, Isao Kataoka, Experiments of water drop impingement on a plane water surface, Proceedings of 4th World Congress on Industrial Process Tomography, VIA11, Aizu, Japan (2005-9).

• Tomio Okawa, Akio Kotani, Naoya Shimada, Isao Kataoka, Measurement of the deposition rate of droplets in a vertical tube containing a flow obstacle, Proceedings of Eleventh International Topical Meeting on Nuclear Reactor Thermal Hydraulics, Avignon, France (2005-10).

　Some Recent Presentations at Domestic Conferences

• 大川富雄・小谷明央・片岡勲，「小口径管内環状流中における液滴付着率の計測」，日本原子力学会春の年会，L50 (2004).

• 山本雄一・白川典幸・堀江英樹・山本泰・大川富雄・二ノ方壽・越塚誠一，「TF-MPSによるスペーサー周りの液滴挙動の解析」，日本原子力学会春の年会，L51 (2004).

　Some Other Publications

• 「Alpha Systems & Windows NT」，日経CG, 6月号, 251-258 (1997).

• 「格子ガスオートマトン法の基本モデル」，格子ガス法ならびに格子ボルツマン法による流体解析入門 (2000).

• 「21世紀の担い手が語るエネルギー・資源と環境」，エネルギー・資源，Vol. 21, No. 1-2 (2000).

• 「格子ガスオートマトン法の基本モデル」，第２回格子ガス法ならびに格子ボルツマン法による流体解析入門（演習形式） (2001).

• 「気泡・液滴・液膜」，エネルギー・資源，Vol. 23, No. 2, pp. 77 (2002).

• 「阪大熱流動工学領域におけるCFX活用例」，CFXユーザーミーティング (2002).

• 「気泡と液滴と液膜」，The News of Engineering, Vol. 20, p. 5 (2002).

• 「逆熱対流機能性粒子を用いた温度成層制御」，流れ，1月号 (2003).

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