fortran程序集

三维有限差分地震波正演模拟程序，时间二阶，空间十阶,MPI并行(3D finite difference seismic modeling,MPI)

金属材料的随动强化有限元模型，适用于有限元分析的本构模型二次开发(Finite element model of kinematic hardening of metallic materials, constitutive model suitable for finite element analysis of secondary development)

管壳式换热器设计：固定管板式热力计算，强度校核，阻力校核。(Shell and tube heat exchanger design: Fixed Tube thermodynamic calculation, strength check, the resistance check.)

通过Fortran语言，利用牛顿方程迭代来求解非线性方程组，可设置为二元或多元(Through the Fortran language, the Newton equation iteration is used to solve the nonlinear equations, which can be set to two yuan or multivariate.)

It is a FORTRAN90 library which evaluates Bessel J functions of noninteger order. List of Routines: BESSEL_JX_VALUES returns some values of the Jx Bessel function. DBESJ computes Bessel J functions of non integer order. D1MACH returns double precision real machine constants. D9LGMC computes the log Gamma correction factor. DASYJY computes Bessel J and Y functions of large order. DCSEVL evaluates a Chebyshev series. DJAIRY computes the Airy function Ai(x) and its derivative. DGAMLM computes bounds for the argument in the Gamma function. DGAMMA computes the complete Gamma function. DLNGAM computes the logarithm of the absolute value of the Gamma function. I1MACH returns integer machine constants. INITDS determines the necessary length of a Chebyshev series. RJBESL evaluates a sequence of Bessel J functions. TIMESTAMP prints the current YMDHMS date as a time stamp. XERMSG

使用晶体相场法模拟枝晶生长的源文件并进行尖端半径速度的分析(The crystal phase field method is used to simulate the source file of dendrite growth and to analyze the tip radius velocity.)

说明：  迭代计算算法，能够完成收敛分析，求解非线性方程根的一个很有效的方法。(Iterative algorithm can complete convergence analysis and solve the roots of non-linear equations.)

线接触滑块的计算方法，给定雷诺方程和膜厚方程，然后用迭代方法计算压力分布和膜厚分布，以及承载能力(The calculation method of the line contact of the slider, a given Reynolds equation and the film thickness of the equation, and then calculated using iterative methods, pressure distribution and film thickness distribution, as well as carrying capacity)

管型燃烧固体火箭发动机压强建立过程计算程序 输入为比热比，燃气气体常数，点火温度，推进剂密度，装药直径（内径和外径），喷管喉部直径，装药体积，燃速相关常数 输出为压强和工作时间(tube type of solid rocket motor combustion pressure build process calculation programs for heat input than, gas gas constant, the ignition temperature, propellant density, charging diameter (inside and outside), nozzle throat diameter, charging volume, burning rate pressure and related constant output to work time )

说明：  采用LBM方法模拟管道中考虑重力条件的流动过程。(The LBM method is used to simulate the flow process in Pipeline Considering Gravity conditions.)