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Online since: December 2010
Authors: Bin Zhang, Xue Jun Liu, Rui Xiang Song, Bin Liu, Tao Feng
In addition, with the development of CFD technology, numerical prediction for the flow noise of fluid machines can be performed nowadays.
By means of numerical simulation, the source data of the experimental model will be calculated under the special acoustic condition of no reflection at the duct ends, and the calculated results will be compared with experimental results.
By means of numerical simulation, the source data of the experimental model will be calculated under the special acoustic condition of no reflection at the duct ends, and the calculated results will be compared with experimental results.
Online since: September 2011
Authors: Hui Xu, Xin Sheng Che, Xing Hua Wang, Yi Fei Gao
Lu, et al, “Estimation and experiment of axial thrust in centrifugal pump based on CFD,” Transactions of the Chinese Society of Agricultural Machinery, vol. 40, no. 1, pp. 60-63, January 2009
Zhang, “Emulation and simulation of dynamic weighting signal,” in Proceedings of International Conference on Intelligent Computation Technology and Automation, vol.
Zhang, “Emulation and simulation of dynamic weighting signal,” in Proceedings of International Conference on Intelligent Computation Technology and Automation, vol.
Online since: January 2013
Authors: Soo Whan Ahn, Ho Keun Kang, Myung Sung Lee
(a) (b)
Fig. 1 Schematic diagram of experimental setup (a) and square test duct with a twisted tape (b)
Fig. 2 Details of cross test section
Mathematical Model
The numerical simulations of the fluid flow and heat transfer in the analyzed square duct geometries are conducted with the CFX 11.0 commercial code.
Wilcox, Turbulence Modelling for CFD, DCW Industires, Inc., La Canada, CA. 1986
Wilcox, Turbulence Modelling for CFD, DCW Industires, Inc., La Canada, CA. 1986
Online since: December 2014
Authors: Brahim Dennai, Abdelhak Bentaleb, Tawfiq Chekifi, Rachid Khelfaoui, Asma Abdenbi
The expression (2) represents Strouhal number, with(f) the frequency of oscillation in the interaction region, (D) thehydraulicdiameterand (u) velocityof the jet:
Str=f∙Du (2)
The period of oscillations is determined by the switching time from the attachment wall to another and the transmission time through the feedback channel [3-6]; the frequency is determined by expression (3):
T=2∙τt+τs=2∙(1C+ξ∙Lu) (3)
Hypotheses: The simulation of the micro-injection systems is obtained with several hypotheses:
ü Air and turbulent regime
ü Incompressible ideal gas flow.
The Fluidic oscillator frequency to millimetre scale was simulated by the CFD code.
The Fluidic oscillator frequency to millimetre scale was simulated by the CFD code.
Online since: November 2022
Authors: Jing Wee Koo, Jia Shin Ho, Jia An, Yi Zhang, Chee Kai Chua, Tzyy Haur Chong
There is limited freedom in terms of design customization, and it has become a bottleneck for further research because the mesh design has many inherent dead zones that can allow foulant deposition [6]. 3D printing has been adopted in many recent studies to experimentally validate the performance of several innovative spacer designs (Fig 1b-e) that were found to be effective in computational fluid dynamic (CFD) simulations.