3D Adiabatic Compression (Layering, Remeshing, and Spring Smoothing)

Problem Description

The problem is shown schematically in Figure 1. A simpli.ed 3D in-cylinder geometry is used, consisting of a circular cylinder, the bottom wall of which represents the piston. The piston moves up from bottom dead center position (BDC), corresponding to a crank shaft angle of 180., slowly compressing the fuid adiabatically. After reaching top dead center (TDC), corresponding to a crank shaft angle of 360., the piston moves back downward to

the initial position, to complete a cycle, at a crank shaft angle of 540. degrees.

flow is compressible=air

Using the text command interface, plot the piston motion pro.le by specifying the

following commands in FLUENT 13:

define/dynamic-mesh/controls/in-cylinder-parameters>ppl