Essays about: "unsteady heat transfer"

Showing result 1 - 5 of 8 essays containing the words unsteady heat transfer.

  1. 1. Simulation of Combustion in a Hybrid Rocket Engine

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Oscar Andersson; [2023]
    Keywords : Thesis; Hybrid Rocket Engine; CFD; computational fluid dynamics; combustion;

    Abstract : A numerical investigation on the combustion mechanics of a hybrid rocket engine is performed through unsteady Reynolds-averaged Navier-Stokes simulation. The hybrid rocket engine model is based on an experimental laboratory scale engine design operating on GOX and HDPE as a propellant. READ MORE

  3. 2. Improving the understanding of heat transfer when boiling solid foods

    University essay from Lunds universitet/Livsmedelsteknik och nutrition (master)

    Author : Dat Nguyen Trong; [2022]
    Keywords : fluid-to-particle heat transfer coefficient; heat transfer; pool boiling; boiling; simmering; starch gelatinization; unsteady-state heat transfer analysis; food engineering; Agriculture and Food Sciences;

    Abstract : Determination of the fluid-to-particle heat transfer coefficient hfp is a fundamental problem in food engineering. Solutions to this problem help food technologists and cooks prepare foods with desired characteristics more efficiently in time and energy use. This study aims to determine the hfp-value in simmering and boiling solid foods. READ MORE

  4. 3. Energy Usage in Railway Wayside Object Heating : Modeling of melting of Ice, Estimation of heating power requirement in Switch and Renewable energy feasibility for a Railway system

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

    Author : Sidharth Kapoor; [2022]
    Keywords : Melting of Ice; Numerical modeling; Transient conjugate heat transfer; Transient analysis; CFD; Switch heating; Heat pumps in Railways; Issmältning; Numerisk modellering; Transient värmeöverföring; Transientanalys; CFD; Värmepumpar i järnvägar;

    Abstract : Trafikverket operates about 12000 Switches and crossings (SnCs) of which 6800 are equipped with an electrical heating system of 10−30kW power to keep SnCs functional throughout the winters by keeping them free of Snow/Ice. The energy consumption is approximately 200−130GWh/year costing approximately 10−15 million Euros annually. READ MORE

  5. 4. Inverse Heat Conduction problem of the Quenching a Rotary Cylinder by Multiple Water Impinging Jets

    University essay from Högskolan i Gävle/Avdelningen för byggnadsteknik, energisystem och miljövetenskap

    Author : Leticia Uriarte Sabín; [2021]
    Keywords : Quenching; Inverse solution; Unsteady heat conduction; Generalized minimum residual method; rotary cylinder;

    Abstract : The thesis deals with solving the time dependent inverse heat conduction and heat transfer problem of the quenching process of a rotary solid cylinder by multiple impinging water jets. The development of such investigation consists of two parts that complement each other. READ MORE

  6. 5. Boiling heat transfer of multiple impinging water jets on a hot rotary cylinder

    University essay from Högskolan i Gävle/Avdelningen för byggnadsteknik, energisystem och miljövetenskap

    Author : Aitor Uriarte; [2021]
    Keywords : Quenching; unsteady heat transfer; multiple impinging jet; boiling; rotary cylinder; fast cooling.;

    Abstract : Quenching technique is widely used in industrial applications as it enhances the mechanical properties of metals such as hardness and tensile strength. This technique consists of a heating process followed by fast cooling which results in different microstructures that enhance the metal behavior. READ MORE