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학술저널
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한국자동차공학회 International journal of automotive technology International journal of automotive technology Vol.6 No.6
발행연도
2005.12
수록면
563 - 570 (8page)

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A numerical study of high pressure and temperature droplet vaporization and combustion is conducted by formulating one dimensional evaporation model and single-step chemical reaction in the mixture of hydrocarbon fuel and air. The ambient pressure ranged from atmospheric conditions to the supercritical conditions. In order to account for the real gas effect on fluid p-v-T properties in high pressure conditions, the modified Soave-Redlich-Kwong state equation is used in the evaluation of thermophysical properties. Some computational results are compared with Sato's experimental data for the validation of calculations in case of vaporization. The comparison between predictions and experiments showed quite a good agreement. Droplet surface temperature increased with increasing pressure. Ignition time increased with increasing initial droplet diameter. Temporal or spatial distribution of mass fraction, mass diffusivity, Lewis number, thermal conductivity, and specific heat were presented.

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ABSTRACT

1. INTRODUCTION

2. THEORETICAL FORMULATION AND BOUNDARY CONDITIONS

3. NUMERICAL METHODS

4. RESULTS AND DISCUSSION

5. CONCLUSIONS

ACKNOWLEDGEMENT

REFERENCES

참고문헌 (2)

참고문헌 신청
[학술지(정기간행물)] - / 2000197319921993197819911995197120011969200019961977 / and spray. Progress in Energy andCombustion Science . Fuel dropletburning rates at high pressures. Proc. 14th Symp. . Numericalstudy of the transient vaporization of an oxygendroplet at sub- and super-critical conditions. Int. J.Heat and Mass Transfer 36 . A modifiedsoave equation of state for phase equilibriumcalculation . Dropletvaporization in high-pressure environments I . Bipropellant dropletcombustion in the vicinity of the critical point. Proc.13th Symp. .Effects of watery vapor concentration on dropletevaporation in hot environment. Int. J. AutomotiveTechnology 2 . Calculationsof steady state droplet vaporization at high ambientpressures. Int. J. Heat and Mass Transfer .Vaporization of n-alkane droplet at high temperatureand pressure. 8th Int. Conf. Liquid Atomization andSpray System . Experimental study on high pressure dropletevaporation using microgravity conditions. 26th Symp. .Thermal conductivies of gas mixtures at highpressures. The Properties of Gases and Liquids p. google schola [학술지(정기간행물)] - / 199319961996198120001994 / . Studies on droplet evaporation andcombustion in high pressures. AIAA Paper 93?0813.Stephen R. Turns. . An Introduction to Combustion.MacGraw-Hill. Singapore. Int. Edn. 135?137.Vielle . High pressure droplet burningexperiments in microgravity. 26th Symp. . Simplifiedreaction mechanisms for the oxidation of hydrocarbonfuels in flames. Combustion Science andTechnology . Modeling of supercritical vaporization and combustion processes in liquid-fueledpropulsion system. 28th Symp. droplets in supercriticalhydrogen environments. Combustion Science andTechnology . vaporizatio (f liquid oxygen) google schola

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