Advanced design of modern engine cooling and vehicle HVAC components involves sophisticated simulation. In particular, front end air flow models must be able to cover the complete range of conditions ....
Vehicle thermal protection is an important aspect of the overall vehicle development process. It involves optimizing the exhaust system routing and designing heat shields to protect various components....
This paper addresses the uncertainties in the thermal protection design process and their effect on the performance of the protected components. Based on the work presented in this paper, it will be p....
A decade of industrial experience with Exa's CFD software, PowerFLOW, has matured the simulation software to the point where the geometric modeling process is now the bottleneck to efficiency and effe....
Shortening of development times in the automotive industry with simultaneous rise of complexity, efficiency and product variety require more effective, faster and “robust” simulation methods. In this ....
Proper design of underhood air-side systems has a significant affect on the performance of automotive cooling systems. By designing and optimizing air-side systems to ensure proper airflow through and....
This paper describes a statistical method of test sizing optimization, used by RENAULT for diesel engine cylinder heads validation. Based on mission profiles, tests results and damage computations, th....
Probabilistic risk assessment is an attempt to quantify design and or manufacturing risks associated with use of a specific product or technology. Risk assessment consists of three main elements: scen....
Due to increasing durability requirements driven by engine emission regulations such as Euro 5 and US'07, the reliability of the engine cooling equipment, especially of charge-air-to-air-cooler (CAC),....
As new technology is introduced into automotive engineering, the level of uncertainty regarding system robustness increases. With it reliability assessment tools that account for such uncertainty is e....
In the process of conducting a reliability analysis of a system, quite often the population of interest is not homogenous; consisting of sub-populations which arise as production operations are adjust....
The implementation of Verification and Validation (V&V) of a computational model of a physical system can be simply described as a 4-step process. One of the steps in the 4-step process is that of Sol....
Auto manufacturers continue to push the limits of vehicle longevity to new extremes. Life expectancy has grown from 100,000 to 150,000 miles and OEMs have their targets set on the 300,000 mile mark. H....
There is a large variation in the results of the durability of friction facings in field applications and in most cases there is very little information about the conditions in which the vehicle opera....
Today's power train applications have increased dynamics and temperatures while power train packaging offers less space for shielding components to protect surrounding parts. Short development timing ....
Virtual testing has grown to be an efficient tool in vehicle passive safety design. Most simulations currently are deterministic. Since the responses observed in real-life and standardized tests are g....
On their own market, European car manufacturers must face high constraints, especially in three domains: environmental issues, reliability and development time reduction. For environmental issues, the....
Metamodeling has been widely used in place of complex numerically intensive simulations to perform design reliability assessment and optimization. Due to cost and time constraints, most complex simula....
Quality and robustness analysis techniques traditionally were manufacturing skills. Recently quality systems, for example DFSS, are focused on moving the formal quality function to earlier phases in t....
Axiomatic Design is a powerful tool conceptualizing and analyzing a design at the earliest practical point. In addition to its analytic capabilities axiomatic design captures and preserves design inte....
