A Study of a Practical Numerical Analysis Method for Heat Flow Distribution in the Engine Compartment

Toshiyukl Minegishi; Yutaka Uematsu; Hitosihi Simonosono; Yasuo Yoshikawa

doi:10.4271/931081

1993-04-01

A Study of a Practical Numerical Analysis Method for Heat Flow Distribution in the Engine Compartment 931081

The thermal environment in the automotive engine compartment is expected to become increasingly severe in the years ahead owing to the installation of a large-size manifold catalyst to reduce exhaust emissions, among other factors. This will make it even more important to analyze the engine compartment layout in terms of heat flow considerations at the design conceptualization stage of a new vehicle.

In this research, a flow analysis program called DRAG4D was applied to find the flow velocity distribution and ambient air temperature distribution in the engine compartment during driving, idling and after the engine was turned off. This original program developed at Nissan takes into account the effects of the energy balance and buoyancy, and provides a practical level of prediction accuracy.

The time required to create an analytical model and perform the computations has been shortened by using an automatic grid generation function, based on a solid model, and experimental equations. As a result,a numerical analysis method has been achieved that can be employed as a practical design tool.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Digital $37.00 Print $37.00

Preview Document

We also recommend:

Standards

SAE Mobilus®

Publications

News

Events

Professional Development

A World in Motion (PreK-12)

Participate with SAE

SAE Membership

Donate

A Study of a Practical Numerical Analysis Method for Heat Flow Distribution in the Engine Compartment 931081

SAE MOBILUS