flow3d prepin.inp常用参数详解.doc

$xputTWFIN. Time to end calculation. Default is TWFIN=10.0 unless thermal cycling is activated (see Thermal Cycling Options).计算结束时间，在热循环开启的情况下默认值为10.0（参考热循环选项）计算完成时间ITB.Indicator for free surfaces or sharp interfaces=0, no free surface or sharp interface=1, free surface or sharp interfaceDefaults to 0 if IDRG 5; defaults to 1 if IDRG=5.自由表面或粗糙界面的指示器0表示二者都没有1表示二者有其一是否考虑熔汤表面与空气的影响GY0.0 Gravity component in y direction. See GRAVY in namelist MOTN for orientation varying gravity. Note: For cylindrical coordinates, use GRAVX, GRAVY.考虑重力对压铸影响，注意g的方向且为-980,单位为CGS。GRAVX0.0 Initial x-direction component of gravity.坐标系为极坐标时用上述参数IFENRG.Flag for internal energy evaluation=0, no energy solution=2, solve transport equation for internal energy (1st order advection)=3, solve energy transport equation using monotonicity preserving, second order method.Defaults to 0 if ICMPRS=0 and IHTC=0;defaults to 2 if ICMPRS=1 or IHTC0.选择能量方程用于计算ISHRNK0 Solidification shrinkage flag. Shrinkage models may only be used for one-material problems (NMAT=1) when ITB=1. Solidification must be activated and solidified density (rhofs) must be different than liquid fluid #1 density (rhof). Shrinkage cavitation pressure (PCAV) must also be set for Dynamic Shrinkage model. (PCAV, RHOFS and RHOF are in namelist PROPS.)=0, no shrinkage model=1, activate Dynamic Shrinkage model=2, activate Rapid Shrinkage model.熔汤层流状态凝固收缩的定义：0表示不收缩。IFVIS0Viscosity evaluation flag=0, local viscosity evaluation (no turbulence model)=1, Prandtl mixing length=2, turbulent energy model=3, two-equation (k-) turbulence model=4, Renormalized Group Theory model (RNG)IFIN1Selects the basis for termination of the calculation=1, terminate when tTWFIN=2, terminate when fill fraction exceeds FRCFIN or no cells are empty or TTWFIN=3 terminate when solidified fraction exceeds FRCFIN or TTWFIN.确定终止计算过程，2为以充填百分比为计算终止标准。FRCFIN1.0 Fill fraction (IFIN=2) or solid fraction (IFIN=3) for termination of the calculation充填完成百分比，一般为1001DTMAX1.e10 Maximum permitted time-step size.DTMIN0.0001?/FONTDELTMinimum permitted time-step size.分析时间间距最大及最小EPSADJ1.0Multiplier for the calculated pressure iteration convergence criterion(alt: EPSI). When EPSADJ 0, the convergence criterion, EPSI, is set automatically at each time step.=0, use constant EPSI set by user=1, standard convergence criterion标准的收敛标准1, coarser convergence粗糙的收敛MU1?/FONTCV1Thermal conductivity of fluid #1. (RMK is in namelist XPUT.)流体的热传导率THCS1THC1Thermal conductivity of solidified fluid #1.凝固后流体的热传导率。TSTAR.Reference temperature for temperature dependent fluid properties.If TS10, TSTAR=TL1; otherwise, TSTAR defaults to 373.15.流体最初的参考温度。CSTAR0.0Reference solute concentration for concentration-dependent density. CSTAR also corresponds to TS1 and TL1 on the phase diagram.参考溶质的浓度由密度决定CLHT10.0 Latent heat of fusion in fluid #1(alt: CLHT).熔汤1熔化潜热。TS10.0 Solidus temperature of fluid #1固相线（液体凝固的临界温度）TL10.0 Liquidus temperature of fluid #1. (Used only when TS10.)液相线（固体熔化温度）DRATIO0.0Ratio of solute diffusion coefficients in solid and liquid phases.在固/液相，溶质扩散系数的比率。TNIYAMTS1Temperature at which solidification variables are calculated (i.e., solidification time, temperature gradient, etc.).要计算凝固变数的温度。（例如凝固时间，温度梯度等）TSDRG1.0 Coefficient of solidification drag.缓慢凝固的系数。FSCR1.0Critical solid fraction above which metal has no fluidity.在金属没有流动性上面临界的固态分数FSCO0.0Fraction of solid at coherency point. When the value of the solid fraction is below FSCO, then the solidified material is assumed to increase the apparent viscosity. When solid fraction is above FSCO, the solidified material forms a coherent structure which is accounted for by using a drag force.在临界点的固态百分数。当固态百分数小于临界值时，凝固的物质粘度明显增加MU1MUIDynamic viscosity of fluid #1. 流体1的动态黏度。MUC000.0 Coefficient in strain rate-dependent viscosity model.相依存的张力比率粘度模型1的系数。MUC01.0 Coefficient in strain rate-dependent viscosity model.MUC10.0 Coefficient in strain rate-dependent viscosity model. (MUC10.0 activates model.) Note: See the Theory Manual (Section 3) for the use of these variables and the shear dependent viscosity equation.MUC20.0 Coefficient in strain rate-dependent viscosity model.MUC30.0 Coefficient in strain rate-dependent viscosity model.MUTMP10.0 Coefficient in temperature dependent viscosity model. MUTMP10.0 activates model. Note: See the Theory Manual (Section 3) for the use of these variables and the temperature dependent viscosity equation.MUTMP20.0 Coefficient in temperature dependent viscosity model.MUTMP31.0 Coefficient in temperature dependent viscosity model.上述参数当选择了流体后自动产生，（如铝合金、镁铝合金等）CANGLE-90?/FONTStatic contact angle (in degrees) for fluid #1 wall adhesion. 0 CANGLE 90 indicates wetting situation90 CANGLE 180 indicates non-wetting situationCANGLE 0 indicates no wall adhesion.流体与模壁的静态接触角度。（(TMELT-TEUT) / (TMELT-TL1); otherwise, defaults to 0.0.共晶的浓度。TEUT.Eutectic temperature (alt: CEUT). If CEUT is set, then TEUT defaults toTEUT=TMELT-(TMELT-TL1)?/FONTCEUT/CSTAR; otherwise, defaults to 0.0.共晶温度。CEXF10.0Solutal expansion coefficient.溶质膨胀系数。$scalarNSC0Number of scalar species.数量种类的数目。IDFCT0Index of scalar species used to record defects. A non-zero value activates the defect tracking option.数量种类索引经常记录缺陷。一个非零值激活缺陷跟踪选项。DFTSRF1.0Coefficient of proportionality for free surface-generated defects (defects created per unit time per unit area).流体与空气表面接触产生缺陷的比例系数。$bcdataWT1Boundary condition type at maximum z side (top) of mesh (see WB). 在网孔的最大z边（顶端）的边界情况类型。WB1Boundary condition type at minimum z side (bottom) of mesh 在网孔的最小z边（底端）的边界情况类型。1, = symmetry plane 对称平面 2, = rigid wall 硬的墙壁3, = continuative boundary 边界条件4, = periodic boundaries (must be applied at opposite sides of mesh) 周期的边界，一定在相反边被应用5, = specified pressure boundary 指定压力边界6, = specified velocity boundary指定速度边界7, = boundary values obtained from previous calculation using grid overlay (GO)procedure 使用网格重叠程序，从先前计算获得边界值。 8, = outflow boundary that minimizes wave reflections.8将波浪反射减到最小后的溢出边界。WF1Boundary condition type at minimum y side (front) of mesh (see WB).在网孔的最小y边（前面）的边界情况类型。WL1Boundary condition type at minimum x side (left) of mesh (see WB).在网孔的最小x边（左面）的边界情况类型。WR1Boundary condition type at maximum x side (right) of mesh (see WB).在网孔的最大x边（右面）的边界情况类型。WBK1Boundary condition type at maximum y side (back) of mesh (see WB).在网孔的最大y边（后面）的边界情况类型。WBC(n)0.0 Z velocity at mesh boundary n (alt: WBCT).在网孔边界n的z方向速度。TBC(n)TBCDTemperature at mesh boundary n (alt: TBCT). Values must be positive.网格边界n的温度。必须是正值。$meshNXCELT1Total number of real cells in x direction在x方向真正网格总数。PX(n).n-th location in x direction for a mesh plane. If NXCELT=1, PX(2) defaults to PX(1)+1.0; otherwise defaults to 0.0.PY(n). n-th location in y direction for a mesh plane.PZ(n). n-th location in z direction for a mesh plane.If NZCELT=1, PZ(2) defaults to PZ(1)+1.0; otherwise defaults to 0.0.Px（n）表示产生网格的区域点，通过多个点可以在不同区域产生不同的网格密度。这样在重要区域可以加密网格，不重要的区域可以稀疏些，减少网格数量，增加分析速度。$obsAVRCK -5.1 AVRCK0, mesh cells with area/volume ratios exceeding this value are listed in preprocessor output. 有超出数值的网格单元在预处理输出时被列出。AVRCK obstacle generator=1, FAVOR fractions in external data file =2, I-DEAS CAD data file=3, stereolithography (STL) CAD data file =4, ANSYS tetrahedral or surface triangle geometric data files=5, topographic file.模壁区域产生标志，为区域n指出几何数据来源。FSTL(n)Stlfile.stlFile name for stereolithography (STL) CAD data file, where nn=n.输入的STL文件名及路径KOBS(m)0.0 Thermal conductivity of obstacle m.模具热传导RCOBS(m)0.0 Density times heat capacity product for obstacle m. If RCOBS0.0, a dynamic equation is solved for the heat