초임계 조건에서 질량 유량 변화에 따른 원통관내 n-dodecane의 열분해 반응에 관한 수치적 연구
A Numerical Study on the Thermal Decomposition of n-dodecane at Various Mass Flow Rate for Super-critical Condition in a Cylindrical Tube
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초록
Numerical simulation on thermal decomposition reaction of n-dodecane in a cylindrical tube is conducted by changing mass flow rate. Thermal decomposition mechanism adopted in the present study is the proportional product distribution (PPD) model for n-dodecane, which is a 1-step global mechanism. All of simulations are performed atr the same temperature of 665 K and pressure of 3 MPa with the wall heated at 580 W. The mass flow rate of n-dedecane increases from 3 to 4 kg/h. In addition, numerical simulations with kinetics mechanisms with and without pyrolysis are conducted and their results of reactive flow fields are compared with each other. The physical properties of the mixture produced by n-dodecane decomposition are evaluated along the tube. The conversion rate of the fuel and the volume of endothermic reaction decreases as the mass flow increases.
Abstract
Numerical simulation on thermal decomposition reaction of n-dodecane in a cylindrical tube is conducted by changing mass flow rate. Thermal decomposition mechanism adopted in the present study is the proportional product distribution (PPD) model for n-dodecane, which is a 1-step global mechanism. All of simulations are performed atr the same temperature of 665 K and pressure of 3 MPa with the wall heated at 580 W. The mass flow rate of n-dedecane increases from 3 to 4 kg/h. In addition, numerical simulations with kinetics mechanisms with and without pyrolysis are conducted and their results of reactive flow fields are compared with each other. The physical properties of the mixture produced by n-dodecane decomposition are evaluated along the tube. The conversion rate of the fuel and the volume of endothermic reaction decreases as the mass flow increases.
참고문헌 (9)
- 이형주, "탄화수소 항공유를 이용한 흡열재생냉각 기술분석", 한국추진공학회지, 25(3), pp.113~126 (2021), 한국추진공학회[DOI]
- T. A. Ward, "Simulations of flowing mildy-cracked nomal alkanes incorporating proportional product distributions", J. Propul. Power, 20(3), pp.394~402 (2004)
- Y. Zhu, "Experimental and numerical investigations on n-decane thermal cracking at supercritical pressures in a vertical tube", Energy Fuels, 28(1), pp.466~474 (2014)
- K. Xu, "Modeling and simulation of supercritical-pressure turbulent heat transfer of aviation kerosene with detailed pyrolytic chemical reactions", Energy Fuels, 29(7), pp.4137~4149 (2015)
- D. Zhang, "Experiment and modeling on thermal cracking of n-Dodecane at supercritical pressure", Energy Fuels, 32(12), pp.12426~12434 (2018)
- 조미옥, "3-화학종 대체 혼합물을 이용한 케로신의 열역학적⋅전달 상태량 예측", 한국항공우주학회지, 41(11), pp.874~882 (2013), 한국항공우주학회
- Fluent, "ANSYS Fluent Theory Guide, Release 2020R1" (2020), ANSYS Inc
- Fluent, "ANSYS Fluent Tutorial Guide, Release 2020R1" (2020), ANSYS Inc
- REFPROP Documentation, Release 10.0, "E. W. Lemmon", National Institute of Standards and Technology, ~ (2018)