Nonsteady dynamics of turbulent axisymmetric jets in stratified fluid: Part 1. Experimental study

被引：2

作者：

Ezhova, E. V. ^{[1
]}

Sergeev, D. A. ^{[1
]}

Kandaurov, A. A. ^{[1
]}

Troitskaya, Yu. I. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Appl Phys, Nizhnii Novgorod 603950, Russia

来源：

IZVESTIYA ATMOSPHERIC AND OCEANIC PHYSICS | 2012年 / 48卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

turbulent jets; oscillation mode; stratification; internal waves; INTERNAL-WAVE GENERATION; SURFACE MANIFESTATIONS; FOUNTAIN; INSTABILITY; PLUMES;

D O I：

10.1134/S0001433812040081

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

The nonsteady dynamics of turbulent axially symmetrical jets in stratified fluid with a great density gradient (pycnocline) is studied in laboratory experiments in the large test reservoir with artificial temperature stratification at the Institute of Applied Physics, Russian Academy of Sciences (IAP RAS) simulating wastewater flows from underwater collectors in coastal cities. An underwater survey of jets in the pycnocline region has been carried out along with synchronous measurements of internal waves. It is shown that a jet quasiperiodically oscillates in a vertical plane, thus effectively generating internal waves when interacting with the pycnocline. It is ascertained that the axially symmetrical mode of jet oscillations is a source of internal waves.

引用

页码：409 / 417

页数：9

共 25 条

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