Finite-element thermal analysis of flows on moving domains with application to modeling of a hydraulic arresting gear

摘要

In this paper, we develop a finite-element framework of simulating the heat transfer of flows on moving domains. A stabilized formulation is utilized to discretize the heat equation posed on an arbitrary Lagrangian-Eulerian frame. The target application is a hydraulic arresting gear, where the relative motion between the rotor and stator is present. In order to perform thermofluid simulations inside such devices, we divide the computational domain into two subdomains: a moving domain containing the rotating parts and a stationary domain containing the rest of the structures. The solutions on the two discontinuous subdomains are communicated through a sliding-interface formulation developed in this paper. We use the numerical framework to study the heat build-up inside a hydraulic arresting gear. The effects of heat sources from fluid viscosity and structural frictions are studied. The simulation results indicate significant heat generations during the operation of arrested landing. Excellent robustness of the developed numerical method is demonstrated, as well as its potential to support real-world engineering applications.