If we regard the scientific study of turbulent flow as beginning with the work of Osborne Reynolds and his mean value equations for mean velocity and mean turbulent kinetic energy, most work over the first fifty years took place in the absence of information about the mechanisms of turbulent ...
An eddy rolling in a turbulent flow has the same life span, life travel and death as the rolling stone and all the other mass movers discussed previously. Review the eddy generation phenomenon illustrated inFig. 2and imagine that you move with the frame of one of those eddies moving downstre...
Recent studies of turbulent shear flows have shown that many of their important kinematical and dynamical properties can be more clearly understood by describing the flows in terms of individual events or streamline patterns. These events or flow regions are studied because they are associated with re...
Strain rates at the center of the coherent fine scale eddies are small compared with the mean strain rate of the whole flow field. The strain rates acting on the fine scale eddies away from the wall coincide with those in homogeneous isotropic turbulence and turbulent mixing layer. However, ...
v.flow in a circular current, of liquids 同义词:purlwhirlpoolswirlwhirl 学习怎么用 词组短语 eddy current涡流;[电学]涡电流 eddy current testing涡流检测;涡流探伤 eddy current loss涡流损耗 eddy flow涡流;旋流;紊流 eddy current braken. 涡疗动器;涡流制动器;涡流闸 ...
An artificially synthesized velocity field with known properties is used as a test data set in analyzing and interpreting the turbulent flow velocity fields. The objective nature of this approach is utilized for studying the relation between streaky and eddy structures. An analysis shows that this ...
The objective of this work is to extract the part of the flow that can be described by the AEH, and study the statistical behaviours of the other part, which cannot be described by the AEH. In this process, two types of eddies are identified in addition to the Kolmogorov-scale eddies, ...
Clustering of coherent fine-scale eddies in a turbulent mixing layer has been analyzed by using direct numerical simulation (DNS) data at Re 位 250. The co... T Itoh,Y Naka,Y Minamoto,... - 《International Journal of Heat & Fluid Flow》 被引量: 0发表: 2018年 Measurement of coherent ...
The approximate deconvolution (AD) procedure is used to estimate the free modeling parameters for the eddy viscosity coefficient parameterized in space and time using the Smagorinsky and Leith models. The novel idea here is to estimate the modeling parameters using the AD method rather than the ...
GRID-SCALE AND SUBGRID-SCALE EDDIES IN TURBULENT FLOWS ∼ A PRIORI TEST Grid-scale (GS) and subgrid-scale (SGS) eddies in homogeneous isotropic turbulence are identified by a priori test. GS and SGS velocity fields are obtained... N Taniguchi,MA Uddin,M Tanahashi,... 被引量: 0发表:...