Essays about: "shadowgraphy"

Found 3 essays containing the word shadowgraphy.

1. 1. Improving gas flow in gas atomization

   University essay from KTH/Materialvetenskap

   Author : Zhiwei Qiu; [2021]
   Keywords : ;

   Abstract : Gas atomization is a cost-effective processing method to produce fine, spheroidized metal powders. During the process, high velocity jets of gas are sprayed at a molten metal stream to break it into small droplets, which will solidify and form the powder particles. READ MORE

3. 2. 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

4. 3. Numerical simulations of thedecomposition of a greenpropellant

   University essay from KTH/Mekanik

   Author : Neven Louis; [2018]
   Keywords : Green propellant; energetic ionic liquids; two-phase flow; rocket propulsion; CFD; High-speed shadowgraphy; Isolated droplet combustion;

   Abstract : Concerns about the use of certain chemical species within the aerospace field are growing in recent years. A European regulation, REACh, now makes the use of hydrazine uncertain in – among others- attitude control thrusters. Green monopropellants, which are alternatives for this species already exist, but they all require a catalyst to react. READ MORE