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Solving the stationary hydroaeroelasticity problem for dynamic deflection elements of separation devices

Pavlenko I., Liaposhchenko A., Ochowiak M., Demyanenko M.

Vibrations in Physical Systems

2018

Vol. 29

art. no. 2018026

The paper presents a method for expanding the working range of separation elements, where the separation is conducted through the use of inertia particles. The presented dynamic separation elements work as the automatic control system (the regulating action is the elastic energy; the regulation object is the hydraulic resistance). It was taken the first step to the engineering method development for their calculation using analytical dependences of the finite element method. The critical velocity of the gas-liquid flow was determined, that causes a divergence phenomenon of dynamic separation device elements and expressions for generalized forces for the system “gas-liquid flow is a dynamic deflection element.” Two-knot finite elements with two degrees of freedom (transverse displacement and angle of the cross-section rotation) were used for dynamic deflection elements. The given number of degrees of freedom of the mechanical system “gas-liquid flow is a dynamic deflection element” due to the consideration of the transverse deformations of the plate allows simplifying the mathematical model. It was suggested to use aerohydroplastic phenomena of dynamic non-stability of dynamic deflection elements of separating devices, analogous to the method of applying acoustic oscillations to a heterogeneous stream, for the coagulation of dispersed particles in the flow.

Staticeskij rascet zatvornoupravnovesivauscego ustrojstva centrobeznogo nasosa

Pavlenko I.

Zeszyty Naukowe Politechniki Świętokrzyskiej. Nauki Techniczne

2008

Z. 10, Vol. 2

165-172

In this paper the technique of static calculation of essentially new design of the locking automatic balancing device of the centrifugal pump is stated. This device represents difficult hydromechanical system of automatic control consisting of two subsystems: a balancing disk and a regulator of pressure difference. This system possesses several advantages in comparison with devices of traditional execution.