Essays about: "radiative transfer"

Showing result 1 - 5 of 25 essays containing the words radiative transfer.

1. 1. The solar abundance of beryllium : constraining the solar problem via non-LTE modelling

   University essay from

   Author : Daria Ogneva; [2023]
   Keywords : atomic processes; radiative transfer; abundance;

   Abstract : Accurately determining the solar abundance of beryllium is a key to calibrate transport processes at the base of convective zone, which in turn is an improvement upon existing solar models and general understanding of the physical processes within the Sun. To determine an abundance, assumptions about the solar atmosphere must be made. READ MORE

3. 2. Simulations of the Tenuous Upper Atmospheres of Exoplanets

   University essay from Lunds universitet/Astrofysik; Lunds universitet/Fysiska institutionen

   Author : Lucian Spitzner; [2023]
   Keywords : astronomy; astrophyics; exoplanets; transmission spectroscopy; magnetic fields; atmospheres; ions; Physics and Astronomy;

   Abstract : Over the last decade, the interest in research on extraterrestrial planets has expanded dramatically. With the number of confirmed exoplanets having increased tenfold over the last ten years, we now know that many different types of exoplanets exist. READ MORE

4. 3. Water born cooling of closed greenhouses : An enclosed vertical water curtain cooling system

   University essay from Högskolan Dalarna/Institutionen för information och teknik

   Author : Ahmad Kamal; [2022]
   Keywords : Greenhouses; Water born cooling; Enclosed water curtain; radiative cooling; Surplus heat energy;

   Abstract : The greenhouses play a key role in food sustainable production, the purpose of the greenhouses is to make an artificial suitable environment to grow different kinds of plants. The cost of energy used in the greenhouses to ensure the optimum temperature, humidity, and CO2 concentration, makes up a large part of the final cost of food. READ MORE

5. 4. Spectroscopic model characterisation of hot exoplanet atmospheres

   University essay from Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Fysiska institutionen

   Author : Elin Sandvik; [2022]
   Keywords : Transit method; Transmission spectroscopy; Exoplanets; Hot Jupiter; Modelling; Physics and Astronomy;

   Abstract : Hot Jupiters are gas giants under intense stellar radiation with short orbital periods of only a few days. Due to their large radii, hot temperatures, and large scale heights, hot Jupiters can be observationally characterised in detail through spectroscopy over an entire orbital phase. READ MORE

6. 5. The K-distribution method for calculating thermal infrared radiative transfer in the atmosphere : A two-stage numerical procedure based on Gauss-Legendre quadrature

   University essay from Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

   Author : Karl Nerman; [2022]
   Keywords : The K-distribution method; thermal infrared radiative transfer; Gauss-Legendre quadrature; numerical integration; MATLAB;

   Abstract : The K-distribution method is a fast approximative method used for calculating thermal infrared radiative transfer in the atmosphere, as opposed to the traditional Line-by-line method, which is precise, but very time-costly. Here we consider the atmosphere to consist of homogeneous and plane-parallel layers in local thermal equilibrium. READ MORE