2012年4月1日 · In this paper, we review the ‘simple’ free round turbulent jet that carries no additional thermo-physico-chemical effects (such as density variation, heat release, et cetera) and that operates in the absence of any geometric modifications to the nozzle (such as …

2001年3月12日 · 本文用GAO-YONG不可压湍流控制方程对圆射流进行了数值验证,成功地解决了该难题,进一步证明了该方程对真实湍流的适定性和通用性。

2006年4月26日 · The structure of round jets in cross-flow was studied using flow visualization techniques and flying-hot-wire measurements. The study was restricted to jet to freestream velocity ratios ranging from 2.0 to 6.0 and Reynolds numbers based on the jet diameter and free-stream velocity in the range of 440 to 6200.

2024年12月1日 · Understanding the behaviour of hot jets is crucial for various engineering and environmental applications. The present work studies the influence of heat transfer on the dynamics of horizontal round hot jets through Large Eddy Simulations (LES).

2023年6月29日 · The aim of the present work is to make a detailed comparison and analysis of RANS method and LES method, and to gain a deeper understanding on the turbulent round jet development. The LES was used to do numerical simulations of the turbulent round jet. The turbulence statistics are independent of the Reynolds number for Re > = 1104.

2022年8月1日 · Direct numerical simulation of round jet in regular waves is presented. Frequency vortex roll-up in regular waves is found to be less as compared to the free jet. Counter-rotating vortex pairs are found asymmetric in regular waves due to jet deflection. The helical mode is found as the preferred mode for the jet in regular waves.

2024年7月25日 · A large-scale direct numerical simulation of a spatially evolving turbulent round jet flow has been conducted at a Reynolds number of 3500 based on the orifice diameter and the mean bulk velocity at the orifice.

For both plane and round jets, the lateral spread of of jets is linear. The precise jet boundaries cannot be defined due to turbulent nature of the flow. Actual jet limits are statistically determined. profiles in the zone of established flow. shown in Fig.1.4. 2. Prove Eq. (A1) & (A2) using Gaussian solution with k = 48.08 for plane jet and k =

2022年3月18日 · We investigate the evolution and interaction mechanism of different vortex structures for the jet in crossflow by a high precision numerical method. To verify the accuracy of the numerical method, the numerical and experimental results are compared. Numerical results show a reasonable agreement with the experimental data.

2015年1月1日 · In this chapter, self-similar solutions of free subsonic jets and wakes are established. These solutions can be used to characterize some properties of the mean turbulent flow itself, to assess turbulence models, and also to provide an analytical solution for the mean flow field under some assumptions.