Advances in computer speed and availability of user friendly software has made computational fluid dynamics (CFD) a cost effective compliment and at times alternative to physical modeling in the field of civil engineering hydraulics. The use of CFD is wide spread in mechanical and aerospace engineering, however, in the field of civil engineering and particularly in hydraulics, there is minimal ...

Various solutions are being proposed and adopted by manufactures and researchers to improve the energetic and environmental performance of internal combustion engines within the transportation sector. For automotive spark ignition engines, gasoline direct injection is one of the presently preferred technologies, in conjunction with turbocharging and downsizing. One of the limiting phenomena of ...

In development of Homogeneous Charge Compression Ignition (HCCI) engines, simultaneous control of combustion phasing and power output has been a major challenge. In this study, a new strategy is developed to control the engine power output and combustion phasing at any desired operating condition. A single zone thermodynamic model coupled to a full kinetic mechanism of Primary Reference Fuels (...

New energy vehicles have better clean and environmental protection characteristics than traditional fuel vehicles. The new engine cooling technology is critical in the design of This paper used one-and three-way joint simulation methods to simulate refrigeration system Firstly, a k-ε turbulent flow model for pump field established based on principle computational fluid dynamics. Then, CFD comme...

Diesel engine emission standards are being more stringent as it gains more publicity in industry and transportation. Hence, designers have to suggest new controlling strategies which result in small amounts of emissions and a reasonable fuel economy. To achieve such a target, multi-objective optimization methodology is a good approach inasmuch as several types of ...

The results from an experimental and numerical study of a known mouse cage (static microisolator type) placed in a wind tunnel are presented. The study involved the collection of experimental airflow data and the use of these data in the validation of the computational fluid dynamics (CFD) cage model. This validation was important as it then allowed the CFD cage model to be used to represent ca...

A dedicated heat exchanger model is introduced for the optimization of heavy-duty diesel engines. The a prerequisite execution CFD simulations, which are used to improve waste recovery in these systems. Several methods coupled with different types working fluids compared terms exergy efficiency and complicity. three considered all lead significant improvements R245fa R1233zd systems comparative...