Experimental Approach and CFD Simulation of Battery Electric Vehicle Body
Tamer Nabil,
Abo-Bakr Helmy Omar,
Tamer Mohamed Mansour
Issue:
Volume 6, Issue 2, June 2020
Pages:
36-52
Received:
12 March 2020
Accepted:
9 June 2020
Published:
20 June 2020
Abstract: Aerodynamic is considered the most significant factor affecting on vehicles fuel consumption and power requirements even at low speed. For this reason, there are much interest and some modifications that decrease drag coefficient and reduce the aerodynamic effectiveness. This study aims to develop an electrical car body (ECB) to decrease the drag coefficient and study the reflection of this parameter in the power consumption rate in different operating speeds. Six different models for car bodies (Bendra, Magenta, Violet, Bluria, Aqua and Vectra) with same wheelbase, height, and track width dimensions are designed. The design of these models has done using Solidworks software by surface tools. Numerical results (frontal area, drag coefficient, drag area and drag force) for the six models are recorded and compared to choose the best designed body. According to results Vectra model is chosen as a best design. The power consumption is calculated for each model at different operating speeds using two different software, Solidworks flow simulation and ANSYS fluent. Experimental results are obtained by testing 3D printing model for the best efficient model with scale 1: 25 at small subsonic open wind tunnel. The experimental results show good agreement with simulation results. Finally, Vectra simulation and experimental results are compared with the real electric and petrol cars to verify the competitive design for Vectra model.
Abstract: Aerodynamic is considered the most significant factor affecting on vehicles fuel consumption and power requirements even at low speed. For this reason, there are much interest and some modifications that decrease drag coefficient and reduce the aerodynamic effectiveness. This study aims to develop an electrical car body (ECB) to decrease the drag c...
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The Development of High Efficiency Integrally Geared Driven Multistage Centrifugal Compressor
Leilei Han,
Fubao Li,
Ning Li,
Haiyang Zhou,
Lihui Jiang,
Zongyang Wang
Issue:
Volume 6, Issue 2, June 2020
Pages:
53-60
Received:
23 April 2020
Accepted:
2 June 2020
Published:
28 June 2020
Abstract: Integrally geared multistage centrifugal compressors have been widely used in many industries. The design of the new compressor is very complicated and needs a reliable design process. This paper discussed the development of a high efficiency integrally geared driven centrifugal compressor for industrial applications. An inhouse program was used to design the centrifugal compressor through aerodynamic and structural optimization. CFD (Computational Fluid Dynamics) is a very important tool for centrifugal compressor design. CFD can help compressor design and perform three-dimensional optimization to further optimize the compressor. The compressor stage matching is also impact the overall compressor performance. The good stage match is very important to make the design success. The Finite Element Analysis (FEA) was used to verify the structure integrity. The CFD and FEA (Finite Element Analysis) analysis are performed to obtain a final compressor performance and to make sure to have a robust operation. The centrifugal compressor has the characteristics of high efficiency, no resonance, and low noise. The designed compressor prototype was built and performance tests were conducted. The performance test results demonstrated that the analytical are fairly agreed with experimental results. The development process and tools are successfully used in the compressor design. The design process can be used for future compressor development.
Abstract: Integrally geared multistage centrifugal compressors have been widely used in many industries. The design of the new compressor is very complicated and needs a reliable design process. This paper discussed the development of a high efficiency integrally geared driven centrifugal compressor for industrial applications. An inhouse program was used to...
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The Recent Progresses in Industrial Centrifugal Compressor Designs
Dingkun Liang,
Hanqian Yang,
Cheng Xu,
Yandan Jiang,
Zhongwei Yi
Issue:
Volume 6, Issue 2, June 2020
Pages:
61-69
Received:
17 May 2020
Accepted:
28 May 2020
Published:
28 June 2020
Abstract: The centrifugal compressor has been widely used in low power gas turbine, supercharger and industrial turbine compressors. Due to its outstanding advantages of simple process, compact structure and wide working range, it is more advantageous in some aspects such as small flow range than counterparts. However, the design of important components of centrifugal compressor requires lots of design experience and consideration. Because of the deepening research of the industrial centrifugal compressor, some excellent design optimization methods and experiences are obtained from researchers. In order to enable designers to get the preliminary design parameters and to develop a compressor with better performance better and faster, this paper addresses the main design optimization methods and design experiences of the components of the industrial centrifugal compressor. The detailed design considerations and design process for centrifugal compressor can reduce the design cycle time without scarifying performance for the new design. The purpose of this paper is to provide some design considerations and experiences of the centrifugal compressor for researchers. According to the centrifugal compressor design optimization process, purposed considerations in this paper are useful for compressor preliminary parameters selections. The optimizations and design considerations in this paper provide a detailed reference document for future centrifugal compressor developments.
Abstract: The centrifugal compressor has been widely used in low power gas turbine, supercharger and industrial turbine compressors. Due to its outstanding advantages of simple process, compact structure and wide working range, it is more advantageous in some aspects such as small flow range than counterparts. However, the design of important components of c...
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