基于格子玻尔兹曼法的热压罐流热固耦合仿真

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Fluid - thermal - structural coupled simulation of autocalve based on lattice boltzmann method

YIN Rongying*，YUN Qingwen，WU Jichao，LI Fei，MA Yinghui，MA Jichuan（AVIC Harbin Aircraft Industry Group Co.，Ltd.，Harbin 150060）

Abstract：Processimulation servesas a criticalsupporting technology foraerospace composite components manufacturing， particularlyforenergy-intensiveautocalve forming.Optimizing processesand improving the thermaluniformityofforming tolingthrough simulationrepresent efective appoaches toimprove theofcomponentformingqualityandreducecosts.This paper focuses ontheautocalveand proposesaFluid-Thermal-Structuralcoupled simulation modelbasedonlatice Boltzmannmethod.Itstudiesthehigh fidelityphysical modelabstractionandcomputationaldomaindiscretizationoftheautocalve，aswellastheselectionofturbulence models，thermal model，sandthermal-StructuralCoupledmodels.Usingthe experimental autoclaveandtestdata，control groups of simulation models were establishedtoconduct numerical calculations of theheating process considering forming toling，therebyvalidating theFluid-Thermal-Structuralcoupled simulation model.Analysisofflowfieldandtemperature fieldsimulationresultsrevealsthat：the high fidelityphysical modelreproducesairflowreflectionandvortexphenomenaconsistent withactualobservations；Thecoupledmodelissimulatesthermal losses，showinga temperature gradient decreasing form thedoor tothebottomoftheautocalve，withlocalized temperature drops intooling-shieldedareasdue toairflow stagnation；Temperaturediscrepancies between simulatedandactual autoclave processes remain within 10qC ，while differences between simulated and measured tooling surface temperatures stay below 4 C . The validted model demonstrates good consistency with experimental paterns，proving suitbale foe simulating complex gas flowand heat transferinautoclave processes.Additionally，futureoptimizationandappication direction forthis technology are proposed.

Keywords：helicopter；autocalve； latice Boltzmann； fluid -thermal -structural coupled； forming tooling

1引言

复合材料因其优异的强度重量比、低膨胀系数、耐温变特性、抗疲劳、耐腐蚀、可设计性等特性，被广泛应用于现代航空飞行器结构中。（剩余6271字）