Essays about: "Flame length"

Showing result 1 - 5 of 10 essays containing the words Flame length.

1. 1. Wildfire growth modelling in Sweden - a suitability assessment of available data

   University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Author : Henrik Hagelin; [2023]
   Keywords : Geography; GIS; Geographic Information Science; Physical geography; Prometheus; WiSE-FASS; The 2014 Västmanland wildfire; Wildfire growth modelling; Wildfire suppression support; Wildfire behaviour; MESAN; Earth and Environmental Sciences;

   Abstract : Wildfires are worldwide problems that stress societies by damaging their economies and they cause serious, sometimes fatal, health implications among the populations. In recent years, the rate of wildfire occurrence has increased as the global average temperature has risen. Because of global climate change, this rate is expected to continue rising. READ MORE

3. 2. A numerical comparison of the thermoacoustics for different equivalence ratios for n-dodecane using LES

   University essay from Lunds universitet/Institutionen för energivetenskaper

   Author : Björn Jarfors; [2023]
   Keywords : Computational Fluid Dynamics; Bluff-body stabilised flames; Large Eddy Simulation; Thermoacoustics; Acoustics; NEUMANN Project; Jet engines; Aero engines; Airplanes; Combustion; Numerics; Technology and Engineering;

   Abstract : Klimatförändringarna påverkar vår värld och det behövs ett mer hållbart samhälle. Flygindustrin är i behov av förändring, men flygmotorer är mycket komplexa och tar tid att utveckla. Termoakustiska instabiliteter har kraften att förstöra en motor, men också att minska miljöpåverkan. READ MORE

4. 3. Flame Extensions Under Ceilings

   University essay from Lunds universitet/Avdelningen för Brandteknik

   Author : Martin Sturdy; [2023]
   Keywords : Flame length; curved ceiling; Technology and Engineering;

   Abstract : In this Master thesis project the factors affecting flame extension under flat and curved ceilings have been investigated. An experimental campaign was carried out in Lund University’s Fire Lab using a propane gas burner and heptane pool fire in different positions and heat release rates within the setups. READ MORE

5. 4. Empirical Verification of an Acoustic Estimation of a Rocket Engine : A Comparison Between Estimated and Measured Noise of a Rocket Engine

   University essay from KTH/Skolan för industriell teknik och management (ITM)

   Author : Elina Arvidsson; [2022]
   Keywords : Esrange Space Centre; Flame deflector; Acoustic estimation; Liquid rocket engine; Rocket Factory Augsburg; Jet acoustics; Esrange Space Centre; Flammdeflektor; Akustisk estimering; vätskedriven raketmotor; Rocket Factory Augsburg; strömningsakustik;

   Abstract : The noise of a rocket engine is a complex and complicated phenomenon which has been studied for more than half a century [1]. There are many sources to this noise, but due to its great potential impact to the surrounding structures, including the vehicle itself, it is important to have a model to estimate the acoustic environment the engine produces. READ MORE

6. 5. Optical Analysis of the Hydrogen Cooling Film in High Pressure Combustion Chambers

   University essay from Luleå tekniska universitet/Rymdteknik

   Author : Fabian Weber; [2019]
   Keywords : optical; analysis; hydrogen; h2; cooling; film; high; pressure; combustion; chambers; rocket; engine; thrust; experimental; oh*; shadowgraphy; flame; emission; lox; liquid; bipropellant; cryogenic; efficiency; heat; flux;

   Abstract : For performance optimisation of modern liquid cryogenic bipropellant rocket combustion chambers, one component which plays an important role in reducing the wall side heat flux, is the behaviour of the cooling film. At the Institute of Space Propulsion of the German Aerospace Center (DLR) in Lampoldshausen, hot test runs have been performed using the experimental combustion chamber BKM, to investigate the wall side heat flux which is -- among other factors -- dependent on cooling film properties. READ MORE