Theoretical and Experimental Research of Capabilities of MHD Technology to Control Gas Flow with Non-Equilibrium Ionization
Abstract
This report results from a contract tasking Leninetz Holding Company, NlPGS as follows: The purpose of the project is the theoretical and experimental research of capabilities of using of MHD technology to control gas flow with non-equilibrium ionization. Cold gas flows will be considered, where thermal ionization of gas flow is negligible. The analysis of various methods of ionization will be carried out, and mathematical models of an ionizer and MHD generator will be developed. Requirements to ionizer, MHD generator and flow parameters at which self-sustained operational mode of ionizer and MHD generator is realized will be formulated. Possibilities of using of MHD control in gas-dynamical systems will be considered. Traditional use of MHD transformation of energy to produce electric power is well understood both theoretically and experimentally nowadays. Nontraditional use of MHD to control flow parameters and hence performance of gas-dynamical systems that include MHD system as a subsystem is not well understood. MHD interaction acts as bulk force and power upon flow and allows varying flow parameters. In this case no mechanical parts are used to control the flow parameters. Therefore, this method of control can be considered as a perspective one for gas-dynamical system with a fixed geometry especially for high enthalpy flows. As a possible range of application for MHD control, two types of gas-dynamical system can be considered: a) gas-dynamical systems which must ensure variable parameters of flow at outlet of system with fixed parameters at inlet of one and b) gas-dynamical systems which must ensure limited range of variation for some flow parameters at outlet of system with variable parameters at inlet. The main requirement to realize MHD influence on flow is flow conductivity. In most gas-dynamical systems thermal ionization of flow is inappreciable and therefore it is necessary to use methods of non-equilibrium plasma creation. Various methods
Document Details
- Document Type
- Technical Report
- Publication Date
- May 10, 2002
- Accession Number
- ADA408793