报告题目：EXPERIMENTAL MODELLING OF SWIRLING FLOWS IN POWER INSTALLATIONS

报告者： Sergey I. Shtork

报告地点：李兆基科技大楼A260

报告时间：2018年10月12日，10：00-12：00

邀请人： 祝宝山

报告者介绍：

1. 所属机构

Department of Heat Power Engineering

Laboratory of Ecological Problems of Heat Power Industry

Institute of Thermophysics

Siberian Branch of Russian Academy of Sciences

2. 研究领域

Hydro Power, Hydroturbines, Unsteady Phenomena in Energy Installations, Combustion, Aerodynamics of Combustors, Gas Turbine Processes, Micropower Generation, Microcombustion, Alternative Energy Technologies, Experimental Methods for Fluid Mechanics and Combustion (LDA, PIV, Flow Visualisation, etc.), Swirl Flows, Large-scale Coherent Structures, Turbulence, Vortex Breakdown, Waves on Vortex Filament, Cavitation, Two-phase Flows, Liquid Film and Rivulet Flows.

3. 工作经历

Head of the Laboratory at the Institute of Thermophysics SB RAS, Novosibirsk, Russia, October 2006-present.

Research Assistant at the Center for Innovation, Technology and Policy Research IN+, Instituto Superior Técnico, Lisbon, Portugal, 2000 – 2006.

Senior Researcher, Research Associate, Research Engineer at the Institute of Thermophysics SB RAS, Novosibirsk, Russia, 1989-2000.

Junior Researcher at the Siberian Thermotechnical Institute SibVTI, Krasnoyarsk, Russia, 1988-1989.

Junior Researcher and Research Engineer at the Krasnoyarsk State University KGU (currently, Siberian Federal University), Krasnoyarsk, Russia, 1983-1988 (1984-1985 - compulsory military service).

报告简介：

Owing to rapid progress in the computer technique, the numerical modelling is now increasingly becoming the main tool for the power plant development and design. The role of physical modelling is still very important, while the main objective of the experiment is to provide empirical information for the verification of numerical codes. With respect to experimental modelling, the reliability and detailed character of the data obtained on the model become crucial. To this end, it is important to specify precisely the boundary conditions, which implies using a simplified, generalized geometry of the working area. To obtain reliable data, it is also important to use non-contact, non-perturbing measurement techniques. Another relevant objective of the experiment, in addition to verifying the computer simulation, is to reveal the physical mechanisms of the processes and to obtain fundamentally new physical effects that may be further used in practice. To accomplish this task the laboratory model should allow for variation within a wide range of geometry and operating modes.

In this context, the presentation will offer some overview of methods and approaches of experimental modeling of various thermal and hydropower devices - combustion chambers of pulverized coal boilers and flow elements of hydro turbines. The focus is on the studies of large-scale concentrated vortices, determining the global structure of the flow and critically influencing the technological processes in industrial equipment.