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In order to get a relatively explicit value of the shear torque, a calculation model for the viscous coupling is proposed in this paper. To get the expression of the shear stress, Oldroyd B constitutive equation is used to describe the characteristics of the silicone oil in the model. The comparison between the model and others shows that the calculation results have a better agreement with the experimental...
Air flow field around open storage pile is a matter of flow around square cylinder. Prediction of wind flow over storage pile plays a dominant role in the evaluation of its environmental impact. Numerical simulation of flow around square cylinder has been widely recognized as a powerful tool in determining air flow field. This paper introduces the application of the numerical simulation in the research...
In this paper, the boiling phenomena of steam boiler under atmospheric pressure are simulated by using the UDF program of CFD software. Characteristics including pressure, temperature and vapor fraction respectively for bubble, slug and annular flow patterns are extracted as the input characteristic vectors of the BP neural network for the purpose of identifying the two-phase (vapor/liquid) boiling...
In academic circles, there are some controversial issues at present, such as difference and relation between exergy analysis and exergy transfer, discipline belongingness of exergy transfer and so on. Taking theoretical research in depth on exergy transfer into consideration, it is necessary to clarify these problems. This paper starts with illustrating the scientific definition of energy, and then...
The oil displacement mechanism in steam injection obtained from the indoor simulation experiments is analyzed, namely some thermal-hydraulic-mechanics-chemical coupling relation in oil reservoir porous media. The phenomenological equation for transfer process of multi-field coupling deduced from the non-equilibrium thermodynamics is simple in form and rich in connotation. The driving force of oil...
The signification of the exergy transfer phenomenological equation for multi-potential fields is introduced, and the concept of field influence factor of exergy transfer resistance is defined. Based on the analysis of the field structure for the thermal driving process, the exergy transfer analysis target is advanced, including the driving work (exergy), driving power (exergy flux), driving resistance...
Multiple channels of ADCs for high bit rate CO-OFDM system is proposed by jointly processing outputs of all channels with a simple algorithm. The required sampling rate of ADCs is reduced lower than Nyquist rate.
This text made a study on the Automated Mechanical Transmission used at an EV-bus. Firstly, the integrated powertrain used in the EV-bus is put forward, which includes the motor, the gearbox and the AMT etc, this integrated powertrain can control the motor speed and the AMT together, the clutch can be cancelled, so it makes the shifting process simple and can improve the efficiency of the driving...
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