METHOD AND APPARATUS FOR USE IN THERMAL COUPLED ANALYSIS

摘要

A method and system of thermal computational fluid dynamics (CFD) analysis on a structure. A thermal CFD model of the structure is created using 3D-CAD software in which a volume of the structure, encompassing a third part, a portion of a first part which is adjacent to and includes a boundary between the first and third parts, and a portion of the second part which is adjacent to and includes a boundary between the second and third parts, is replaced by a notional fourth part. Thermal-CFD analysis of the thermal CFD model is performed using thermal conductivity of a fourth part that is calculated, based on known thickness of the fourth part, known thickness, the derived shape and known value of the thermal conductivity of the third part, and known values of the thermal conductivity of portions of the first and second parts.

主权项

1. A method of carrying out thermal computational fluid dynamics (CFD) analysis on a structure including a first part, a second part and a deformable third part located between and in contact with each of the first and second parts, the method comprising:
creating a thermal CFD model of the structure using 3D-CAD software in which a volume of the structure, encompassing the third part, a portion of the first part which is adjacent to and includes a boundary between the first part and the third part, and a portion of the second part which is adjacent to and includes a boundary between the second part and the third part, is replaced by a notional fourth part, which has a uniform thickness greater than or equal to twice a size of mesh used to mesh the first part and the second part; deriving a shape of the third part as deformed under load from structural analysis of a structural analysis model of the structure; calculating a value for the thermal conductivity of the fourth part, based on a known value of the thickness of the fourth part, a known value of the thickness of the third part, the derived shape of the deformed third part, a known value of the thermal conductivity of the third part, and known values of thermal conductivity of portions of the first part and the second part; and performing thermal-CFD analysis of the thermal CFD model using the calculated thermal conductivity of the fourth part.