Tanasawa Award. Professor Yasusi Tanasawa presented the first winner the award at the Sendai Conference by himself.

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1 Tanasawa Award The late Professor Yasusi Tanasawa was the one of the world foremost pioneers in the research of liquid atomization. He contributed greatly to this field by ascertaining the characteristics of many different kinds of spray. One of his significant contributions was the Nukiyama-Tanasawa equation for liquid droplet distribution. In addition, he proposed many different designs for different ways of atomizing. In particular, he was noted for the swirl atomizer. In 1982, the committee members of the council of ILASS-International proposed that future conferences should have an international academic award. They suggested that it should be named the Tanasawa Award in commemoration of Professor Tanasawa's important pioneering contributions to the field of liquid atomization and spray systems. They asked Professor Tanasawa's disciples to put the award, including the fund raising, into practice. The entire funding for the award was donated by the TOYOTA MOTOR Co.Ltd. This is due to the thanks of Dr. Shoichiro Toyoda, who was the former president of TOYOTA MOTORS Co. and is one of Professor Tanasawa's disciples. Professor Yasusi Tanasawa presented the first winner the award at the Sendai Conference by himself. The selection committee for the Tanasawa Award has been organized to select the best paper from each previous ICLASS conference. The committee consists of nine members who are nominated from throughout the world. The Tanasawa Award consists of the Plaque with Silver Metal, Award Certificate and Prize Award.

2 Professor Yasusi Tanasawa Yasusi Tanasawa 1906 October, Born in Tokyo 1929 March, BSc. Mechanical Engineering, the University of Tokyo 1929 April, Lecturer of Tohoku University Thermo Engineering Department with Professor Shiro Nukiyama 1941 July Professor at Aeronautic Department 1965 to 1968 Dean of the College of Engineering 1970 March, Retired from Tohoku University 1970 April, Toyota Central Research and Development Laboratories Ltd. as a President July 27. Passed Away Research Duration 1) * Air Blast Atomization * Atomization with Rotating Disk * Atomization Mechanism * Atomization by Impingement 2) * Swirl Atomizer * Spray Combustion * Turbo Jet Engine 3) * Atomization Mechanism * Drop Size Measurement * Atomization by Rotating Nozzle * Atomizing Characteristics of Diesel Nozzle * Atomization by Impingement 4) * Gasoline Injector

3 The Tanasawa Award Committees Fund: The entire fund to pay for the award was donated by Toyota Motor Co. Ltd. Administration Committee of the Tanasawa Award a) Member(at 2012): Chairman: N. Nagai Vice-Chairman: M,Arai Members: M. Nakayama, N. Araki, M. Yamada, A. Saito T.Inamura, N.Iki b) Tasks of Administration Committee * Managing Funds * Preparing the Plaque and Certificate * Preparing a check for Prize Money (US$2,000) Selection Committee of the Tanasawa Award (SCTA) a) Select the best paper at ICLASS b) The chairman of the Tanasawa award selection committee should be appointed by the president of ILASS-International. c) Committee member shall total 10, to include the chairman and 3 members nominated from each of ILASS-Americas, ILASS-Asia, and ILASS-Europe. d) The selection committee is a closed committee. e) Only, the chairman of the selection committee is open.

4 Chairman of Selection Committee Chairmen of Selection Committee 1. K. Kobayasi ( ,at Tokyo, Japan, Madison, USA and London, England) 2. N. Chigier ( ,at Sendai, Japan) 3. S. Zanelli ( ,at Gaithersburg, USA) 4. H. Hashimoto ( ,at Rouen, France) 5. J. Kennedy ( ,at Seoul, Korea) 6. A. Yule ( ,at Pasadena, USA) 7. H. Fujimoto ( ,at Sorrento, Italy) 8. W. D. Bachalo ( ,at Kyoto, Japan) 9. Christophe Domouchel ( ,at Vail) 10. Jiro Senda ( ,at Heidelberg)

5 Winners of Tanasawa Award (1) 1) Tokyo(1978) Injection Valve of Swirl Flow Type used for Electronic Fuel Injection by Y. Tanasawa, N. Muto and A. Saito 2) Madison(1982) The Relationship between Atomization Characteristics and Spray Flame Structures by R. Bolado and A. J. Yule 3) London(1985) The Mechanics of High Speed Atomization by F. Ruiz and N. Chigier 3) London(1985) Atomization Characteristics of Superheated Liquid Jets by N. Nagai, K. Sato and C.W. Lee 4) Sendai(1988) Advances in Diagnostics for Complete Spray Characteristics by W. D. Bachalo, A. B. DeLaRosa and R. C. Rudoff 5) Gaithersburg(1991) Application of Poisson Statistic to the Problem of Size and Volume Flux Measurement by Phase Doppler Anemometry by C.F. Edwards and K.D. Marx 6) Rouen(1994) Study on Wave Motion and a Breakup of Annular Liquid Sheet in a Gas Stream by H. Hashimoto, S. Kawano, H. Togari, A. Ihara, T. Suzuki and T. Harada

6 Winners of Tanasawa Award (2) 7) Seoul(1997) Characterization of Liquid-Liquid Mixing in Sprays using Rainbow Refractometry by S. V. Sankar, D. M. Robart and W. D. Bachalo 8) Pasadena(2000) Investigation of Internal Flow in Transparent Diesel Injection Nozzles Using Fluorescent Particle Image Velocimetry (FPIV) by C. Tropea, J. K. Scaller, R. Wirth and J. Walher 9) Sorrento(2003) Detailed Analysis of Spray Structure Air Entrainment in GDI Sprays Using a Tomographic Approach by C. Seibel, K. Gartung, S. Arndt and B. Weigand 10) Kyoto(2006) The Influence of Surfactants on Impacting Drops by A. Rozhkov, B.Prunet-Foch, M. Vignes-Adler 11) Vail(2009) Ultra-fast Structured Laser Illumination Planar Imaging (SLIPI) for single-shot imaging of dense sprays by K,Kristensson, E.Berrocal, M.Richter, M.Alden 12) Heidelberg(2012) to be opened at ICLASS-2015

7 Professor Yasusi Tanasawa 1906 October, Born in Tokyo 1929 March, BSc. Mechanical Engineering, the University of Tokyo 1929 April, Lecturer of Tohoku University Thermo Engineering Department with Professor Shiro Nukiyama 1941 July Professor at Aeronautic Department 1965 to 1968 Dean of the College of Engineering 1970 March, Retired from Tohoku University 1970 April, Toyota Central Research and Development Laboratories Ltd. as a President July 27. Passed Away

8 Prof. Yasusi Tanasawa (Research Duration) 1) * Air Blast Atomization * Atomization with Rotating Disk * Atomization Mechanism * Atomization by Impingement 2) * Swirl Atomizer * Spray Combustion * Turbo Jet Engine 3) * Atomization Mechanism * Drop Size Measurement * Atomization by Rotating Nozzle * Atomizing Characteristics of Diesel Nozzle * Atomization by Impingement 4) * Gasoline Injector

9 Nukiyama- Tanasawa Equation 1938 Nukiyama, S. and Tanasawa, Y., Experiments on the Atomization of Liquids in an Air Stream I, Trans. Soc. Mec. Engrs., Japan, Vol.4, No.14(Feb.1938), pp dn fn x Ax Bx dx exp A B 1 B x32 dv fv x A x B x dx exp

10 Hole Nozzle x D g v a D1 30. x x x dv exp 3 0. d x 32 x 32 x Tanasawa, Y., and Toyoda, S., On the Atomizing Characteristics of High-Speed Jet I, Trans. Soc. Mec. Engrs., Japan, Vol.20, No.92 (Apr. 1954), p.299

11 The Tanasawa Award The entire fund to pay for the award was donated by Toyota Motor Co. Ltd. Administration Committee of the Tanasawa Award a) Member(at 2012): Chairman: N. Nagai Vice-Chairman: M,Arai Members: M. Nakayama, N. Araki, M. Yamada, A. Saito T.Inamura, N.Iki b) Tasks of Administration Committee * Managing Funds * Preparing the Plaque and Certificate * Preparing a check for Prize Money (US$2,000)

12 Selection Committee of Tanasawa Award Selection committee of the Tanasawa Award a) Select the best paper at ICLASS b) The chairman of the Tanasawa award selection committee of should be appointed by the president of ILASS-International. c) Committee member shall total 10, to include the chairman and 3 members nominated from each of ILASS-Americas, ILASS-Asia, and ILASS-Europe. d) The selection committee is a closed committee. e) Only, the chairman of the selection committee is open.

13 Past Chairman of Selection Committee Past Chairmen of Selection Committees were: 1. K. Kobayasi (at Tokyo, Japan, Madison, USA and London, England) 2. N. Chigier (at Sendai, Japan) 3. S. Zanelli (at Gaithersburg, USA) 4. H. Hashimoto (at Rouen, France) 5. J. Kennedy (at Seoul, Korea) 6. A. Yule (at Pasadena, USA) 7. H. Fujimoto (at Sorrento, Italy) 8. W. D. Bachalo (at Kyoto, Japan) 9. Christophe Domouchel (at Vail) 10. Jiro Senda (at Heidelberg)

14 Past the Tanasawa Award Winners(1) 1) Tokyo(1978) Injection Valve of Swirl Flow Type used for Electronic Fuel Injection by Y. Tanasawa, N. Muto and A. Saito 2) Madison(1982) The Relationship between Atomization Characteristics and Spray Flame Structures by R. Bolado and A. J. Yule 3) London(1985) The Mechanics of High Speed Atomization by F. Ruiz and N. Chigier 3) London(1985) Atomization Characteristics of Superheated Liquid Jets by N. Nagai, K. Sato and C.W. Lee 4) Sendai(1988) Advances in Diagnostics for Complete Spray Characteristics by W. D. Bachalo, A. B. DeLaRosa and R. C. Rudoff

15 Past the Tanasawa Award Winners(2) 5) Gaithersburg(1991) Application of Poisson Statistic to the Problem of Size and Volume Flux Measurement by Phase Doppler Anemometry by C.F. Edwards and K.D. Marx 6) Rouen(1994) Study on Wave Motion and a Breakup of Annular Liquid Sheet in a Gas Stream by H. Hashimoto, S. Kawano, H. Togari, A. Ihara, T. Suzuki and T. Harada 7) Seoul(1997) Characterization of Liquid-Liquid Mixing in Sprays using Rainbow Refractometry by S. V. Sankar, D. M. Robart and W. D. Bachalo 8) Pasadena(2000) Investigation of Internal Flow in Transparent Diesel Injection Nozzles Using Fluorescent Particle Image Velocimetry (FPIV) by C. Tropea, J. K. Scaller, R. Wirth and J. Walher 9) Sorrento(2003) Detailed Analysis of Spray Structure Air Entrainment in GDI Sprays Using a Tomographic Approach by C. Seibel, K. Gartung, S. Arndt and B. Weigand

16 Past the Tanasawa Award Winners(3) 10) Kyoto(2006) The Influence of Surfactants on Impacting Drops by A. Rozhkov, B.Prunet-Foch, M. Vignes-Adler 11) Vail(2009) Ultra-fast Structured Laser Illumination Planar Imaging (SLIPI) for singleshot imaging of dense sprays by K,Kristensson, E.Berrocal, M.Richter, M.Alden 12) Heidelberg(2012)

17 Past the Tanasawa Award Winners 1) Tokyo(1978): Injection Valve of Swirl Flow Type used for Electronic Fuel Injection by Y. Tanasawa, N. Muto and A. Saito 2) Madison(1982): The Relationship between Atomization Characteristics and Spray Flame Structures by R. Bolado and A. J. Yule 3) London(1985): The Mechanics of High Speed Atomization by F. Ruiz and N. Chigier 3) London(1985): Atomization Characteristics of Superheated Liquid Jets by N. Nagai, K. Sato and C.W. Lee 4) Sendai(1988): Advances in Diagnostics for Complete Spray Characteristics by W. D. Bachalo, A. B. DeLaRosa and R. C. Rudoff 5) Gaithersburg(1991): Application of Poisson Statistic to the Problem of Size and Volume Flux Measurement by Phase Doppler Anemometry by C.F. Edwards and K.D. Marx 6) Rouen(1994): Study on Wave Motion and a Breakup of Annular Liquid Sheet in a Gas Stream by H. Hashimoto, S. Kawano, H. Togari, A. Ihara, T. Suzuki and T. Harada 7) Seoul(1997): Characterization of Liquid-Liquid Mixing in Sprays using Rainbow Refractometry by S. V. Sankar, D. M. Robart and W. D. Bachalo 8) Pasadena(2000): Investigation of Internal Flow in Transparent Diesel Injection Nozzles Using Fluorescent Particle Image Velocimetry (FPIV) by C. Tropea, J. K. Scaller, R. Wirth and J. Walher 9) Sorrento(2003): Detailed Analysis of Spray Structure Air Entrainment in GDI Sprays Using a Tomographic Approach by C. Seibel, K. Gartung, S. Arndt and B. Weigand 10) Kyoto(2006): The Influence of Surfactants on Impacting Drops by A. Rozhkov, B.Prunet-Foch, M. Vignes-Adler 11) Vail(2009): Ultra-fast Structured Laser Illumination Planar Imaging (SLIPI) for single-shot imaging of dense sprays by K,Kristensson, E.Berrocal, M.Richter, M.Alden 12) Heidelberg(2012)

18 Prof. Chigier received Tanasawa Award at Sendai, Japan on 1988