CFD Study of Grinding Fluid Flow and Heat Transfer in the Abrasive Contact Region

This paper introduces a research oriented numerical model used to simulate the fluid flow in a grinding process. Some of the most important features of the model are described, along with some results obtained. Distributions of temperatures, pressures and flow rates in and around grinding region are obtained in great detail. These results are essential in studying the influence of the fluid on the grinding process, as well as in determining the best fluid composition and supply parameters for a given application. The results agree well with global flow rates and temperature values found in literature and show the feasibility of 3-D simulations in grinding applications.

Download Full-text

Detailed Study of Fluid Flow and Heat Transfer in the Abrasive Grinding Contact Using Computational Fluid Dynamics Methods

Journal of Manufacturing Science and Engineering ◽

10.1115/1.4023719 ◽

2013 ◽

Vol 135 (4) ◽

Cited By ~ 6

Author(s):

Stefan D. Mihić ◽

Sorin Cioc ◽

Ioan D. Marinescu ◽

Michael C. Weismiller

Keyword(s):

Heat Transfer ◽

Fluid Dynamics ◽

Computational Fluid Dynamics ◽

Fluid Flow ◽

3D Models ◽

Liquid Volume ◽

Fluid Composition ◽

Grinding Process ◽

Flow And Heat Transfer ◽

Simulation Results

This paper introduces a set of research oriented computational fluid dynamics (CFD) 3D models used to simulate the fluid flow and heat transfer in a grinding process. The most important features of these models are described and some representative simulation results are presented, along with comparisons to published experimental data. Distributions of temperatures, pressures, velocities, and liquid volume fractions in and around the grinding region are obtained in great detail. Such results are essential in studying the influence of the fluid on the grinding process, as well as in determining the best fluid composition and supply parameters for a given application. The simulation results agree well with experimental global flow rates, temperature, and pressure values, showing the feasibility of CFD simulations in grinding applications.

Download Full-text

3-D CFD Parametric Study of the Impact of the Fluid Properties and Delivery Conditions on Flow and Heat Transfer in Grinding

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.325.225 ◽

2011 ◽

Vol 325 ◽

pp. 225-230 ◽

Cited By ~ 1

Author(s):

Stefan Mihić ◽

Sorin Cioc ◽

Ioan Marinescu ◽

Michael C. Weismiller

Keyword(s):

Heat Transfer ◽

Work Piece ◽

Fluid Composition ◽

Grinding Process ◽

Flow Rates ◽

Cfd Models ◽

Flow And Heat Transfer ◽

Fluid Properties ◽

Useful Flow ◽

The Impact

Fluids have an important role in grinding. Correct fluid application results in enhanced process stability, better work piece quality, and tool life. This paper shows that Computational Fluid Dynamics (CFD) models can be used to simulate the fluid flow and heat transfer in a grinding process, replacing numerous experiments that are expensive, time-consuming, and have limited capabilities. The most important properties of created 3-D model are described, along with results obtained. The results show very detailed distributions of temperatures, pressures, and flow rates in and around the grinding region. The data obtained is essential in studying the influence of the grinding fluid on the grinding process, as well as in determining the best fluid composition and supply parameters for a given application. The results agree well with experimental global flow rates and temperature values and show the feasibility of 3-D CFD-based simulations in grinding applications. The parametric studies of influence of several fluid physical properties on useful flow rates and temperatures were presented as well.

Download Full-text

Non-Newtonian Fluid Flow and Heat Transfer in a Porous Medium. 2nd Report. Prediction of Porous Inertia Based on a Three-Dimensional Numerical Model.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B ◽

10.1299/kikaib.62.3426 ◽

1996 ◽

Vol 62 (601) ◽

pp. 3426-3430

Author(s):

Masahiko INOUE ◽

Akira NAKAYAMA

Keyword(s):

Heat Transfer ◽

Porous Medium ◽

Fluid Flow ◽

Numerical Model ◽

Newtonian Fluid ◽

Three Dimensional ◽

Flow And Heat Transfer

Download Full-text

Study on Fluid Flow and Heat Transfer Characteristics of Molten Pool Considering the Effects of Turbulence

Volume 9: Prof. Norman Jones Honoring Symposium on Impact Engineering; Prof. Yukio Ueda Honoring Symposium on Idealized Nonlinear Mechanics for Welding and Strength of Structures ◽

10.1115/omae2016-54272 ◽

2016 ◽

Author(s):

Rong Liang ◽

Zhen Chen ◽

Yu Luo

Keyword(s):

Heat Transfer ◽

Fluid Flow ◽

Numerical Model ◽

Molten Pool ◽

High Energy ◽

Dissimilar Material ◽

Turbulent Model ◽

Heat Transfer Characteristics ◽

Transfer Characteristics ◽

Flow And Heat Transfer

Recently, the welding of dissimilar material using high energy beam has gained greater popularity. During the process of welding, the differences in physical properties of the materials and high concentration of energy have a great influence on the related fluid flow and heat transfer characteristics in the molten pool. For the welding of a similar material, the fluid flow in the molten pool is often assumed to be laminar in nature. However, in the dissimilar material welding, the fluid flow in the molten pool is more intensive and complicated. It is necessary to take into account the effects of turbulence in the numerical model. In this paper, the simulation of laser welding of low carbon steel and stainless steel couple is carried out. A three-dimensional, transient numerical model is developed using computational fluid dynamics (CFD) method. The characteristics of heat, mass and momentum transports in the molten metal pool are investigated using both laminar and turbulent flow models under identical welding conditions of laser power and moving speed. To improve calculation accuracy, the turbulence effects are taken into account by employing a suitably modified k–ε model. Melting and solidification were simulated not by tracking the solid-liquid interface but using the Enthalpy-Porosity model to save calculation time. Results show that the diffusive transport is enhanced in the turbulent model. This is reflected in the reduction in the maximum values of temperature and velocity magnitude in the turbulent model in comparison to those in the laminar model. The influence of turbulence on the species transport in the molten pool is significant. The phase distribution in the turbulent simulation is found to be more uniform than that obtained in the laminar simulation. Good agreements between the experimental observations and simulation results are obtained by the proposed method. This study has laid a solid foundation for the analysis of welded joint by coupled thermo-hydro-mechanical method.

Download Full-text