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The Application of CFD to Evalution and Improvement in Diesel Intake Port

Author: HanYiYong
Tutor: LuoGuangJi
School: Guangxi University
Course: Power Machinery and Engineering
Keywords: Spiral inlet Computational Fluid Dynamics Steady Flow Test Flow coefficient Swirl ratio numerical simulation Experimental verification
CLC: TK423
Type: Master's thesis
Year: 2005
Downloads: 415
Quote: 8
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Abstract


The inlet structure directly affect the strength of the internal combustion engine cylinder charge and the amount of size and eddy current is directly related to the mixture formation , combustion , emissions and overall performance . Traditional airway R \u0026 D experience in the design and Steady Flow Test method of combining long development cycle , and it is difficult to get the ideal solution . Three - dimensional numerical simulation of the inlet , not only for comprehensive evaluation parameters , and airway flow field microscopic information , provide an important basis for airway optimization design and improve . Diesel engine inlet research and development ; selected inlet flow mathematical model and the numerical methods ; reverse engineering method to establish a three-dimensional geometric model YCF3200 Helical inlet airway steady flow test rig test results for the boundary conditions , in the AVL FIRE software , three - dimensional CFD numerical simulation ; given for the first time the principle of airway CFD numerical simulation to determine the end of the calculation ; calculation results are validated at the trial from the the Ricardo and FEV evaluation of parameters , both trends are in good agreement , to verify the application of CFD evaluation of the feasibility of the airway ; gives a the airway detailed flow field information , airway suggestions for improvement suggestions for improvement ; depending on the airway grinding the cylinder head and a steady flow test test results are in good agreement with the desired objectives to verify the correctness of the application the CFD to change inlet . This is the first flow field analysis results directly applied to guide the airway grinding to achieve quick, good effect of reducing development costs .

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CLC: > Industrial Technology > Energy and Power Engineering > Internal combustion engine > Diesel engine > Structure
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