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Obtaining Droplet Size Distribution of Liquid Droplets from Nozzle to Venturi Case Study Highlights Client Profile: Process Equipment Manufacturer, USA Objective: To obtain droplet size distribution/ Sauter mean diameter of liquid droplets, entering from the top nozzle to the venturi. Challenges: = To develop simulation domain to capture the droplet flow from the nozzle = Selection of suitable swirl and droplet model
Gas scrubbers utilize high velocity liquid droplets to absorb solid particles and filter the gas stream. The scrubbing process is largely dependent on the ability of the nozzle to finely atomize the liquid spray into number of droplets. It is also crucial to maintain the droplet size distribution and diameter to a substantial distance inside the venture, in order to effectively absorb the solid particles in gas. A leading process equipment manufacturer from U.S., needed to evaluate the nozzle design and identify mean droplet diameter, in order to improve the scrubber efficiency.
= Identify droplet size diameter at specified
region Solution: The droplet size distribution and Sauter mean diameter (D32) was calculated assuming suitable model for particle tracking, droplet breakup, coalescence and heat transfer. Using different mean diameter calculation approaches, the droplet diameter was calculated at given plane. Software Used : ANSYS Fluent 14.5
The Solution In order to accurately measure the droplet size distribution and mean droplet diameter, the simulation domain was first modeled through CAD tools. Finer mesh was applied near the nozzle injecting area to capture accurate physics. Discrete Phase Model (DPM) was used for particle tracking and pressure swirl model was utilized for droplet injection. Maximum and minimum droplet diameters were measured using different measurement approaches.This solution can also be provided using OpenFOAM, STAR CCM+, Abaqus CFD, COMSOL Multiphysics.
Benefits = Identified the nozzle injection performance and
droplet distribution = Reduced physical test trials and associated costs
About Hi-Tech
Author: Mehul Patel CFD Consultant
Hi-Tech CAE is a division of Hi-Tech Outsourcing Services, a pioneer engineering outsourcing company since 1992 based in India & USA. It provides expert Computer Aided Engineering - CAE consulting services for engineering / product design analysis by modeling & simulation. The primary services extended include Computational Fluid Dynamics (CFD), Finite Element Analysis (FEA), product design optimization and value engineering services to Automotive, Building / Construction, Process industry, Power Generation, Manufacturing & Heavy Engineering industries.
Phone: +1-408-338-8047 Email: info@hitechcae.com
Outsourcing Services Your Trusted Outsourcing Partner
Hi-Tech Outsourcing Services 547 Moreland Way Santa Clara, CA 95054
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