|Statement||S.W̲. Kim and T.J. Benson.|
|Series||NASA technical memorandum -- 104343., NASA technical memorandum -- 104343.|
|Contributions||Benson, Thomas J., United States. National Aeronautics and Space Administration.|
|The Physical Object|
Get this from a library! Calculation of a circular jet in crossflow with a multiple-time-scale turbulence model. [S W Kim; T J Benson; United States. National Aeronautics and . Calculation of a circular jet in crossflow with a multiple-time-scale turbulence model. By T. J. Benson and S.-W. Kim. Abstract. Numerical calculation of a three dimensional turbulent flow of a jet in a crossflow using a multiple time scale turbulence model is presented. The turbulence in the forward region of the jet is in a stronger Author: T. J. Benson and S.-W. Kim. JETS IN CROSS-FLOW Figure Maximum, mini-mum and time-averaged mean concentration in a planar jet. (Adapted from Kotsovinos, ) c(x,r) = cmax exp − r2 2σ2 = cmax exp − 50r2 x2. () where cmax(x) is the peak concentration along the centerline, a function of the distance x. Conservation of the total amount of contaminant File Size: KB. The jet to crossflow velocity ratio is A modified version of the computer program (INS3D), which utilizes the method of artificial compressibility, is used for the computations. Results obtained clearly indicate that the near-field large-scale structures are extremely dynamic in nature, and undergo breakup and reconnection processes.
seen. Downstream of the jet, another vortex namely CVP is occurred. When the crossflow skirts around laterally the jet, it shears the jet fluid along its edges and then folds the face of the jet over itself to form the CVP . The most important feature in JICF phenomena is jet-to-crossflow velocity ratio, R. This paper examines the trajectory and entrainment characteristics of a round jet in crossflow. A series of large eddy simulations was performed at Reynolds numbers of and and at jet to crossflow velocity ratios of and Trajectories, which are defined based on the mean streamlines on the centerplane, all collapse to a single curve far from the jet exit, and this curve can be. CFD Heat Transfer Predictions of a Single Circular Jet Impinging with Crossflow. Calculation of the momentum and heat transfer in turbulent gas-particle jet flows. A multiple-time-scale turbulence model based on variable partitioning of turbulent kinetic energy spectrum. Kim, S.W., and Benson, T.J. (), Calculation of a circular jet in crossflow with a multiple-time-scale turbulence model, Int. J. Comp. Phys. Vol pp. – ADS CrossRef Google Scholar Muldoon, F. and Acharya, S. (), Numerical investigation of the dynamical behavior of a row of square jets in crossflow over a surface, (To be.
The surface pressures in the wake are pretty sensitive to the type of turbulence modeling used. I have a few references, mostly older ones. Check out: AIAA "A numerical investigation of a subsonic jet in a crossflow" AIAA Journal Vol. 17 No.2, "Prediction of a Three-dimensional Circular Jet in Crossflow". An integral method is proposed for calculating a circular turbulent jet propagating in a crossflow. The jet parameters obtained by a numerical method for different values of ¯q were compared with experimental data. Satisfactory agreement between the sets of data was found. Vertical jet in flowing water is a common phenomenon in daily life. To study the flow and turbulent characteristics of different jet orifice shapes and under different velocity ratios, the realizable k-ε turbulent model was adopted to analyze the three-dimensional (3D) flow, turbulence, and vortex characteristics using circular, square, and rectangular jet orifices and velocity ratios of 2, 5. Experiments are performed of a round jet in crossflow of spatially evolving turbulent boundary layer in a low-speed wind tunnel. Turbulence is triggered 11 inches upstream of the jet by a .