Design method of cylindrical inducer, cylindrical inducer and its flow field
A design method and inducer technology, which are applied in mechanical equipment, components of pumping devices for elastic fluids, liquid fuel engines, etc., can solve the problems of complicated calculation process and steps, poor design accuracy, etc., and improve design efficiency. , the effect of simplifying the intermediate process
Active Publication Date: 2020-01-07
TSINGHUA UNIV
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[0006] The object of the present invention is to provide a cylindrical inducer design method, a cylindrical inducer and its flow field, to solve the problems of poor design accuracy, complicated calculation process and steps in the inducer design method in the prior art, and Obtaining a Flow Field for an Efficient Cylindrical Inducer and Its Cavitation-Free Characteristics
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[0024] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...
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The invention provides a cylindrical inducing wheel design method and relates to the technical field of fluid machinery. The cylindrical inducing wheel design method comprises the steps that a three-dimensional flow function in an inducing wheel is decomposed into a symmetrical flow function and a two-dimensional cross section vortex function; and symmetrical flow is corrected through two-dimensional cross section vortex amount, and therefore geometrical parameters of the inducing wheel and cavitation-free characteristic parameters of the inducing wheel are obtained. According to the cylindrical inducing wheel design method, designing is carried out based on a binary flow model, and higher precision and design efficiency are achieved compared with a unitary flow theoretical analyzing design method. On this basis, the invention further provides the cylindrical inducing wheel and a cylindrical inducing wheel flow field.
Description
technical field [0001] The invention relates to the technical field of fluid machinery, in particular to a design method of a cylindrical inducer, a cylindrical inducer and a flow field of the cylindrical inducer. Background technique [0002] The inducer is a key component in a cryogenic liquid rocket engine, used to transport liquid hydrogen and oxygen to the combustion chamber, and its operating speed is high, and it is often accompanied by complex instability caused by cavitation flow. [0003] Among them, the common shape of the inducer is cylindrical and conical. For cylindrical inducers, technicians generally use the one-dimensional flow theory analysis method based on the assumption of infinite blades for design. [0004] The unary flow theory analysis method based on the assumption of infinite blades only considers the inducer head when cavitation does not occur in the impeller of the main centrifugal pump, estimates the cavitation specific speed of the inducer, an...
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IPC IPC(8): F04D29/22
CPCF04D29/225G06F30/17
Inventor左志钢刘树红余璐
OwnerTSINGHUA UNIV