RE: Emissivity values (Fluent – Combustion, Radiation)

- June 16, 2023 at 1:28 pm
  
  J.LoongHee
  Subscriber
  
  Hi all,
  
  We are seeking advice choosing an appropriate assumption for refractory wall and water cooled tube wall emissivities in a high temperature furnace.
  
  The furnace 0.9 x 0.9 x 3.5m.The furnace walls are made of light density, vacuum formed, alumina fibre. Furnace is natural gas and hydrogen fire, and it is fitted with stainless steel water cooled tubes
  The focus of the work is predicting radiative heat transfer to the water cooled tubes. These are positioned 50mm inboard of the side walls. There are 5 tubes along each side wall ~0.6m apart.
  Refractory wall temperatures are likely to be in the region of 1200-1400degC and water cooled tube surface temperatures ~100degC.
  
  Could you advise me on this please?
  
  Thanks
  Jee
- June 20, 2023 at 9:35 am
  
  Swathi V. V.
  Ansys Employee
  
  Hi,
  I would recommend you to refer to heat transfer text books and journals to get an appropriate value of material properties for the working condition.

Viewing 1 reply thread

You must be logged in to reply to this topic.

Ansys Innovation Space

Boost Ansys Fluent Simulations with AWS

Computational Fluid Dynamics (CFD) helps engineers design products in which the flow of fluid components is a significant challenge. These different use cases often require large complex models to solve on a traditional workstation. Click here to join this event to learn how to leverage Ansys Fluids on the cloud, thanks to Ansys Gateway powered by AWS.

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.

Ansys Blog

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.

Trending discussions