Essays about: "transient flow"

Showing result 26 - 30 of 109 essays containing the words transient flow.

  1. 26. A NUMERICAL MODEL OF HEAT- AND MASS TRANSFER IN POLYMER ELECTROLYTE FUEL CELLS : A two-dimensional 1+1D approach to solve the steady-state temperature- and mass- distributions

    University essay from Mälardalens högskola/Framtidens energi

    Author : Emil Skoglund; [2021]
    Keywords : PEFC; PEM; convection; mass transport; heat transport; co-flow; temperature profile; heat transfer model; transient; steady state; water concentration profile; water vapor profile; relative humidity; through-plane cross section;

    Abstract : Methods of solving the steady state characteristics of a node matrix equation system over a polymer electrolyte fuel cell (PEFC) were evaluated. The most suitable method, referred to as the semi-implicit method, was set up in a MATLAB program. READ MORE

  3. 27. CFD Simulation of a Fin-Tube Evaporator under icing

    University essay from Linköpings universitet/Mekanisk värmeteori och strömningslära

    Author : Abhay Mahesh Hervatte; [2021]
    Keywords : CFD; Refrigeration; HVAC; Evaporator; Thermodynamics; Icing;

    Abstract : The study involves development of a methodology to simulate a fin-tube evaporator under icing conditions using CFD in Ansys® Academic Fluent 2021R1. It aims to build on previous studies performed on heat pumps. It was performed by Abhay M. Hervatte in collaboration with Bosch Thermoteknik AB, Tranås, SE during the spring term of the year 2021. READ MORE

  4. 28. Infiltration, hydrogeology, and heterogeneity - Management of pressure and flow: A case study for the Varberg tunnel project

    University essay from Göteborgs universitet/Institutionen för geovetenskaper

    Author : Lisa Risby; [2020-07-08]
    Keywords : short duration hydraulic tests; hydraulic conductivity; radius of influence; infiltration; heterogeneity; confined and unconfined aquifer;

    Abstract : This thesis aims to describe a conceptual model of the sedimentology for Swedish (or nordic) conditions of heterogeneous aquifers but focus is on a case study in Varberg. This to facilitate the identification of main water-bearing units (e.g. READ MORE

  5. 29. Finite element modelling of LV transformer winding to simulate dynamic events occurring under short circuit : In Ansys Mechanical

    University essay from Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Author : Madhu Venkata Sri Prudhvi Bikkina; [2020]
    Keywords : Ansys Mechanical; LV winding; Power Transformer; Short-circuit; Spiraling; Torsional Mode Shapes;

    Abstract : The ability to withstand a short circuit is the most essential feature of a power transformer. The most important reason to design short-circuits proof transformers is to ensure the reliability of the power grid (avoiding black outs etc.) and safety (fire and explosion in case of failure). READ MORE

  6. 30. The temporal impacts of climate condition on groundwater flow using numerical transient modelling

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Malieha Zannat Rahman; [2020]
    Keywords : Climatic Condition; Groundwater Flow; Transient-State Modelling; Numerical Modeling; Krycklan Catchment; Visual MODFLOW Flex;

    Abstract : Compiling comprehensive understanding of all the available natural resources is an important task which should be carried out as it holds a crucial role for the next generation’s lives. In particular, groundwater is considered as one of the vital resources in providing essential drinking water. READ MORE