Tailoring turbulence with an active grid
نویسندگان
چکیده
منابع مشابه
Designing and evaluating an active grid architecture
Today’s computational grids are using the standard IP routing functionality, that has basically remained unchanged for 2 decades, considering the network as a pure communication infrastructure. With the grid’s distributed system point of view, one might consider to extend the commodity Internet’s basic functionalities. Higher value functionalities can thus be offered to computational grids. In ...
متن کاملStructural Tailoring and Active Control Methodologies
3.1 Structural Tailoring Technique As revealed in Chaper 2, the boundary-value problem consists of six differential equations of motion (expressed in terms of the displacements wo ,θy,θx ,uo ,vo and φ ), together with the corresponding BCs. Such a set exhibits a complete coupling between the various modes, i.e., primary and secondary warping, vertical and lateral bending, twist and transverse s...
متن کاملFigure Captions Grid-generated Turbulence with and without Rotation
Fig. 1. Omnidirectional energy spectrum E(k) versus wavenumber k, computed from Eqs. (9)-(11), for the case A = 0:7, = 1, varying the rotation rate = 0; 10; 100. There is a smooth transition from the Komogorov`? 5=3' case = 0 to a spectrum = 100 that approaches a ` ? 2' form. Spontaneous breaking of reeexional symmetry in real quasi-two-dimensional turbulence: stochastic traveling waves and hel...
متن کاملPlume statistics in thermal turbulence: mixing of an active scalar.
Statistical properties of the temperature field in turbulent convection are studied experimentally. We show that the skewness of the plus and minus temperature increments can be used to quantitatively characterize the mixing zone in the convective flow and the result reveals how the mixing zone evolves with the Rayleigh number. We also present evidence for the saturation of the temperature stru...
متن کاملInertial waves in rotating grid turbulence
Using liquid helium, liquid nitrogen, and water as test fluids, we attempt to generate homogeneous turbulence in a steadily rotating system. We create turbulence by pulling a grid in rotating channels with both square and round cross sections, and observe large-scale inertial waves in the flow. These inertial waves quickly sense the boundaries, and resonate at frequencies characteristic of the ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Experiments in Fluids
سال: 2010
ISSN: 0723-4864,1432-1114
DOI: 10.1007/s00348-009-0812-5