【飞行器设计专栏(一)】Thermal Management and Control

风流知音【飞行器设计专栏(一)】Inverse Design: Thermal Management and Control  CFDJT(2018)1009

Inverse Design: Thermal Management and Control

P. G. Huang 

Wright State University

Dayton, USA

Using fuel as a heat sink to manage and control the thermal endurance of aircraft is an area of interest from a fundamental point of view.    First, the topology of the fuel line not only can affect the efficiency of the heat release but also can be designed to respond quickly to the change of the environmental heat load conditions.   Second, the problem is an inverse design one in which the solution is generally known by the requirements of the aircraft and the design or/and control strategies are optimized to give the best desired solution.  In the current work we shall focus on the dynamic optimal solution of the differential equations governing the heat transfer of recirculated fuel flows for the single and dual tank arrangements.   It has been observed that the dual tank arrangement can store and release energy faster than the single tank case.   Finally, the adjoint method is shown to be a subset of the current solution method and the linear quadratic regulator, the feedback controller, can be derived by linearizing the adjoint equations against the trim point to offer a simple control strategy which can be implemented directly in the feedback control hardware.

Distribution A.  Cleared for public release, distribution unlimited: 88ABW-2016-5643.