Special Issue "EFD and Heat Transfer III"

Submission Deadline: 15 June 2021 (closed)
Guest Editors
Zhigang Fang, Wuhan University of Technology, China

Summary

This special issue is devoted to the discussion of recent developments and applications of engineering fluid mechanics and heat transfer.

 

Fluid mechanics is a discipline based on potential flow equations, Euler equations, and Navier-Stokes equations, the development of computer provides theoretical and experimental verification basis for engineering fluid mechanics, and EFD is widely used in the design of aircraft and fluid machinery. Heat transfer studies the transmission patterns of heat energy caused by temperature difference. As theoretical and experimental research continue to close its gaps with production and life, microscale heat transfer, phase change of biological heat transfer, multiphase flow heat transfer, low-temperature heat transfer, and many other interdisciplinary studies and subdisciplines were derived therefrom.

 

In recent years, with the development of micromachining and the growing demand for miniaturization of industrial products, microscale heat transfer has become a hot topic in the research of engineering thermophysics. Related professional experts, researchers, graduate students are welcome to join us in the following topics:

 

1) Aerodynamics, such as aircraft wing design, automotive body design;

2) Fluid-solid coupling analysis;

3) Thermodynamics and heat transfer, such as thermal analysis during engine combustion;

4) Fluid theory method, such as Navier-Stokes equations;

5) Postprocessing and model validation, including Statistical Learning and Uncertainty Quantification.


Keywords
Engineering Fluid Mechanics; Heat Transfer; Aerodynamics; Thermodynamics.

Published Papers
  • Analysis of the Thermal Behavior of a Lithium Cell Undergoing Thermal Runaway
  • Abstract This study examines the thermal runaway of a lithium ion battery caused by poor heat dissipation performances. The heat transfer process is analyzed on the basis of standard theoretical concepts. Water mist additives are considered as a tool to suppress the thermal runaway process. The ensuing behaviour of the battery in terms of surface temperature and heat generation is analyzed for different charge and discharge rates. It is found that when the remaining charge is 100%, the heat generation rate of the battery is the lowest, and the surface temperature with a 2C charge rate is higher than that obtained… More
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  • A study on the Gas-based Lubrication of Elastic Foil Bearings Using an Over Relaxation Iteration Method
  • Abstract A new type of foil bearings with a specific surface microstructure is studied. First, relevant boundary conditions based on the assumption of rarefied gas flow are proposed, then, the static bearing capacity and friction torque are analyzed in the framework of a numerical technique based on the discretization of the governing equation for rarefied gas-dynamics. It is shown that under the same static load, the difference between the minimum film thickness calculated in this exploration and the results provided by dedicated tests is not obvious; with an increase in the load, the simulation results are closer to the test values;… More
  •   Views:127       Downloads:107        Download PDF

  • Analysis of the Flow Field Characteristics Associated with the Dynamic Rock Breaking Process Induced by a Multi-Hole Combined External Rotary Bit
  • Abstract The characteristics of the flow field associated with a multi-hole combined external rotary bit have been studied by means of numerical simulation in the framework of an RNG k-ε turbulence model, and compared with the results of dedicated rock breaking drilling experiments. The numerical results show that the nozzle velocity and dynamic pressure of the nozzle decrease with an increase in the jet distance, and the axial velocity of the nozzle decays regularly with an increase in the dimensionless jet distance. Moreover, the axial velocity related to the nozzle with inclination angle 20° and 30° can produce a higher hole… More
  •   Views:289       Downloads:291        Download PDF

  • CFD Analysis and Optimization of an Engine with a Restrictor Valve in the Intake System
  • Abstract In some competitions the rules clearly state that all participating cars must install a restrictor valve structure in the intake system of the engine. The intake air volume of the engine is considerably affected due to the existence of such a valve. Indeed, a small interface diameter through which gas flows can lead to considerable flow resistance and loss. In this study, a four-cylinder engine for FSC racing is analyzed using a combined method based on numerical simulation and experiments. The analysis reveals that the main factors affecting the intake air volume are the intake manifold and the volume of… More
  •   Views:288       Downloads:324        Download PDF

  • A Research on the Flow Characteristics of a Splitter-Based Water Cooling System for Computer Boards
  • Abstract The splitter is an important component of water-based cooling systems used to extract heat from computer boards. In the present study, the flow characteristics of a 16-splitter structure were numerically simulated and compared with experimental results to verify the reliability of the numerical simulation method. Accordingly, the concept of splitter structural coefficients was proposed. Based on the results of this study, we recommend a selection range of 5 ≤ k ≤ 6 for the structure factor k of the splitter; after optimization, the maximum deviation of the splitter outlet flow was reduced from the original value of 100% to 8.3%. More
  •   Views:288       Downloads:275        Download PDF