In the present study, a model of a large Lithium Polymer (Li-Po) battery for use in the simulation of Hybrid Electric Vehicles (HEVs) is developed. To attain this goal, an Equivalent Circuit (EC) consisting of a series resistor and two RC parallel networks is considered. The accuracy and the response time of the model for use in an HEV simulator are studied. The battery parameters identifica...

Investigating nozzle’s orifice flow is challenging both experimentally and theoretically. This paper focuses on simulating flow inside diesel injector nozzle via Ansys fluent v15. Validation is performed with experimental results from Winkhofler et al (2001). Several important parameters such as mass flow rate, velocity profiles and pressure profiles are used for this validation. Results includ...

This paper describes the concept of using simulation as a tool for performance validation and energy analysis of HVAC systems. Recent advances in control system technology, including the development of open protocols such as BACnet have made sensor and control signal information from various components and subsystems in a building more accessible. This development has created significant potent...

The hydro-mechanical coupling transport process of sand production is numerically investigated with special attention paid to the bonding effect between sand grains. By coupling the lattice Boltzmann method (LBM) and the discrete element method (DEM), we are able to capture particles movements and fluid flows simultaneously. In order to account for the bonding effects on sand production, a cont...

Calculations based on US Geological Survey (USGS) digital elevation models (DEMs) inherit any errors associated with that particular representation of topography. We investigated the potential impact of error in a USGS 30 m DEM on terrain analysis over 27 km. The difference in elevation between 2652 differential Global Positioning Systems measurements and USGS 30-m DEM derived elevations provid...

To improve the working performance of hammer mill, cutting-edge and oblique were designed in this study. The advantages new hammers theoretically analyzed. grinding process corn grain with different was studied by discrete element method (DEM) experiments. Discrete simulation results showed that under same rotor speed conditions, had highest bond-breaking efficiency model. could reduce incident...

In this paper we analyse the effects of different spatial input data resolution on water balance simulation using a simple distributed hydrological model: PCRXAJ model. A data set consisting of land use and digital elevation model at 25 m resolution of Xitiaoxi catchment in South China is used for investigation. The model was first calibrated and validated at 50m cell size, thereafter an aggreg...