Numerical analysis of flows in reciprocating engines
Abstract
A numerical method of the analysis for threedimensional turbulent flow in cylinders of reciprocating engines with arbitrary geometry is described. A scheme of the finite volume/finite element methods is used, employing a large number of small elements of arbitrary shapes to form a cylinder. The fluid dynamic equations are expressed in integral form for each element, taking into account the deformation of the element shape according to the piston movements, and are solved in the physical space using rectangular coordinates. The conventional kepsilon twoequation model is employed to describe the flow turbulence. Example calculations are presented for simple pancaketype combustion chambers having an annular intake port at either center or asymmetric position of the cylinder head. The suction inflow direction is also changed in several ways. The results show a good simulation of overall fluid movements within the engine cylinder.
 Publication:

JSME International Journal Series B
 Pub Date:
 July 1986
 Bibcode:
 1986JSMEB..29.2183T
 Keywords:

 Computational Fluid Dynamics;
 Cylindrical Bodies;
 Piston Engines;
 Three Dimensional Flow;
 Turbulent Flow;
 Finite Element Method;
 Finite Volume Method;
 Flow Equations;
 Internal Combustion Engines;
 KEpsilon Turbulence Model;
 Swirling;
 Fluid Mechanics and Heat Transfer