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下面是子函数newxyz中的例子
请高手帮忙解释一下最后部分中的
VCORN(3,I)=VCORN(3,I)-DELALF*(VCORN(3,I)-ZREF)/(ZMAX-ZREF)是什么意思啊?
C Sample coding: Vertex movement calculation for a reciprocating
C piston in a fixed cylinder, where the piston is
C activated by a rotating crank mechanism, whose para-
C meters are:
C C = connecting rod length
C A = crank radius
C OMEGA = rotational speed
C DELTHE = crank angle covered per time step
C ZREF = z coordinate below which the mesh
C remains unchanged
C
C PI=3.14159265
C C=40.0
C A=9.0
C OMEGA=100.
C ZREF=1.
C DELTHE=PI*OMEGA/30.*DT
C THETA=REAL(ITER)*DELTHE
C TN=SQRT(C**2-A**2*(SIN(THETA-DELTHE)**2))
C ALFN=A*(1.-COS(THETA-DELTHE))-C+TN
C TNP1=SQRT(C**2-A**2*(SIN(THETA)**2))
C ALFNP1=A*(1.-COS(THETA))-C+TNP1
C DELALF=ALFNP1-ALFN
CC---- LOCATE MAX Z
C ZMAX=VCORN(3,1)
C DO 20 I=2,NDMAXU
C IF(VCORN(3,I).GT.ZMAX) ZMAX=VCORN(3,I)
C 20 CONTINUE
CC---- CALCATULE NEW Z valueS
C DO 10 I=1,NDMAXU
C IF(VCORN(3,I).LE.ZREF) GO TO 10
C VCORN(3,I)=VCORN(3,I)-DELALF*(VCORN(3,I)-ZREF)/(ZMAX-ZREF)
C 10 CONTINUE
C-------------------------------------------------------------------------C
RETURN
END
C
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