NUMERICAL SIMULATION FOR ULTRASONIC FOULING DETECTION BASED ON FLUID-SOLID STRUCTURE INTERACTION
SUN LingFang
XU ManFei
KONG ShengQi
Abstract：Based on simulation software of Comsol Multipysics,a launch coupling-board-fouling multilayer finite element model was established.In addition,by deeming elastokinetics and pressure acoustics as theoretical foundations,an acoustic vibration control equation was derived for the thin plates at the condition of plane wave radiation to study ultrasonic propagation rules in flow and solid phase zones and also implement elastic numerical simulation for longitudinal and transverse wave separation of two-dimensional flat fouling.Furthermore,a high-precision detection was carried out for the thickness of fouling deposited on the thin plate after the extraction of the separated wave field.The numerical simulation results indicated that complete separation and extraction of elastic P-and S-waves were also realized for the solid phase zone in a better manner according to the flow zone complies with micro acoustic wave equation propagation law;In addition,the detection error of deposited fouling on thin plate performed by the ultrasonic wave was within a range of about 5％.Such results not only proved both feasibility and accuracy of numerical simulation,but also played a role of guidance in the operation and clearing of the actual heat exchange system.
Keywords：Heat exchange foulingUltrasonic detectionP-and s-waves separationNumerical simulation
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：6( 1296-1301 )