Is it possible to have negative spalding heat and mass transfer number during DPM droplet evaporatio
November 5, 2020 at 2:43 pmRajasekarK123SubscriberIs it possible to have negative spalding heat and mass transfer number during DPM droplet evaporationn
November 9, 2020 at 8:22 pmSurya DebAnsys EmployeeHello, nSpalding Mass Transfer Number is (Yf_infinity - Yf_surface)/(Yf_surface -1). Where Yf_infinity is the mass fraction of the fuel (considering a fuel droplet) far away from the droplet surface and Yf_surface is the fuel mass fraction on the droplet surface. nEssentially is can be less than zero or negative if Yf_infinity becomes larger than Yf_surface, because the denominator is always negative (Yf_surface<1).nThat essentially means the surrounding is saturated with fuel and the concentration gradient is sort of reversed. nCan you please check the mass fractions in your case?nRegards,nSuryan
- You must be logged in to reply to this topic.
Simulation World 2022
Check out more than 70 different sessions now available on demand. Get inspired as you hear from visionary companies, leading researchers and educators from around the globe on a variety of topics from life-saving improvements in healthcare, to bold new realities of space travel. Take a leap of certainty and check out a session today here.
Earth Rescue – An Ansys Online Series
The climate crisis is here. But so is the human ingenuity to fight it. Earth Rescue reveals what visionary companies are doing today to engineer radical new ideas in the fight against climate change. Click here to watch the first episode.
Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.
- Suppress Fluent to open with GUI while performing in journal file
- Heat transfer coefficient
- What are the differences between CFX and Fluent?
- Floating point exception in Fluent
- The solver failed with a non-zero exit code of : 2
- Getting graph and tabular data from result in workbench mechanical
- Difference between K-epsilon and K-omega Turbulence Model
- Time Step Size and Courant Number
- Mesh Interfaces in ANSYS FLUENT
- error in cfd post
© 2022 Copyright ANSYS, Inc. All rights reserved.