[PDF] Top 20 Convection Velocity of Temperature Fluctuations in a Turbulent Flume

... wall. Convection Velocities in a Turbulent Boundary ...The convection velocities of temperature fluctuations along the chan- nel, U cT ⫹ , and U cq ⫹ , are shown in ...the ... See full document

... investigate turbulent temperature fluctua- tions and turbulent heat flux in hot ...and temperature ratios were ...the temperature field behaves similar to the velocity field, but ... See full document

... depth of z/zi=0.525 In general, after the action of turbulence during a time in- terval 1t ∗ , a destination cell i should contain a set of par- ticles originating from a variety of sources. Elements along the main ... See full document

... two exponents α and ζ ∞ . The question is now on the dependence of the above parameters on the dynamical characteristics of the ABL. This is a practical need if one uses multifractal interpolations for SGS purposes. ... See full document

... the velocity profile from the wall up to the sensor head as linear in a first ...the fluctuations of the wall shear stress and the fluctuations of the velocity in the near-wall region in a ... See full document

... 2.2) and Reynolds numbers (910 4 < Re < 3.510 5 ). The results are compared and discussed in the context of the upstream propagation of positive surges and tidal bores in an open channel. 2. EXPERIMENTAL FACILITY AND ... See full document

... stagnation temperature fluctuations in two such facilities is inferred from incompressible temperature fluctuations data obtained by other ...friction velocity Reynolds numbers for the ... See full document

... small–scale fluctuations, while for intermediate rates its periodical appearance and recon- figuration blots the time–series with periods of exponential growth and ...of velocity and ... See full document

... a turbulent, natural convection problem is performed with a compressible Large-Eddy ...natural convection the fluid is accelerated by local den- sity differences and a resulting pressure ...the ... See full document

... normal velocity fluctuations, hence attenuating the transport of momentum in that direction and thus modifying the local velocity ...the velocity profile reduces and the drag ...slow ... See full document

... pressure, temperature, and density are independent of time while in an unsteady flow the fluid properties are functions of ...conduction, convection, and ...higher temperature to the one with a lower ... See full document

... mixed convection in a vertical duct with a plane symmetric sudden expansion are presented to illustrate the effects of the buoyancy assisting force and the duct’s aspect ratio on the flow and heat ...the ... See full document

... natural convection of air inside a rectangular enclosure is studied ...constant temperature difference of 40K, with the hot surface at 313K and the opposite cold surface at ...for turbulent ... See full document

... and temperature fields observed experimentally and numerically in a standard RB cell at high Rayleigh numbers (generally > 10 5 ...RB convection For high Rayleigh numbers, convective flow is heavily ... See full document

... u ′ – 3% 1.5% 10% v ′ – 3% 1.5% 6% located at y + ≈ 15, which is typical for turbulent boundary layers at zero pressure gradient. However, this peak location is not reached for X-wire probe because of the large ... See full document

... substantial temperature drop due to the Joule-Thomson effect and jet exit temperatures can be tens of degrees below ...operating temperature. Time-resolved temperature and velocity ... See full document

... shot temperature measurements using laser fluences around 10 mJ/cm 2 ...for temperature measurements us- ing BAM:Eu, covering repetition rates up to 10’s ... See full document

... of convection and turbulent mixing that drive circulation in oceans and other water ...drive convection between surface and bottom ...finger convection can occur, which also results in a flux ... See full document

... vertical temperature profiles measurement in turbulent RBC across the whole height of the experimental cell, involving the turbulent core as well as the thermal boundary ...evaluated ... See full document

... In order to quantify the influence of the selected flame front surface on the burning velocities obtained in the present rig, Bradley et al. performed simultaneous high speed 105 photography of images from schlieren and ... See full document