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Showing result 1 - 5 of 7 essays matching the above criteria.

  1. 1. CFD Study of An Office Room Equipped with Corner Impinging Jet Ventilation

    University essay from Högskolan i Gävle/Energisystem och byggnadsteknik

    Author : Getiye Wodaje; [2022]
    Keywords : CFD in ventilaion; Thermal comfort; Impinging jet ventilation; thermally stratified flow; Corner impinging jet; Office air quality; Indoor environment; turbulent jet;

    Abstract : A CFD validation study was made using corner supplied impinging jet ventilation operating in cooling mode. The air distribution system has two equilateral triangle shaped inlets placed 80cm above the floor at the two that share a common wall. The supply air was introduced at 2.26m/s. READ MORE

  3. 2. A Fractional Step Zonal Model and Unstructured Mesh Generation Frame-work for Simulating Cabin Flows

    University essay from Linköpings universitet/Mekanisk värmeteori och strömningslära

    Author : Sergi Tarroc Gil; [2021]
    Keywords : Zonal Model; Thermal Comfort; Fluid Simulation; Aircraft Cabin Design; NURBS; Morphing; Radial Basis Functions; Meshing; Co-located Mesh; Unstructured Mesh; Mesh Quality; Mesh Smoothing; Enlarged Orientation Theorem; Fractional Step Method; Boussinesq; Adam Bashforth; Helmholtz-Hodge Theorem; Rhie and Chow; Difference Schemes; Gradient Evaluation; Differential Heated Cavity; Driven Cavity; Draught Rate;

    Abstract : The simulation of physical systems in the early stages of conceptual designs has shown to be a key factor for adequate decision making and avoiding big and expensive issues downstream in engineering projects. In the case of aircraft cabin design, taking into account the thermal comfort of the passengers as well as the proper air circulation and renovation can make this difference. READ MORE

  4. 3. Strukturkalkens inverkan på jordmotstånd : analys av mätningar på det horisontella och vertikala motståndet

    University essay from SLU/Dept. of Biosystems and Technology (from 130101)

    Author : Claes Sjöberg; Jens Kårhammer; [2021]
    Keywords : strukturkalkning; dragkraftsbehov; jordmotstånd; penetrometermotstånd; aggregatbildning; lerjord; pH;

    Abstract : Genom tillförsel av strukturkalk, som är en jordförbättringsåtgärd till lerjord, kan flera positiva effekter uppnås. Forskning har tidigare visat att strukturkalkning kan ge stabilare aggregat, och kan bidra till minskat fosfor läckage samt bättre vatten och näringshållande förmåga. READ MORE

  5. 4. Experimental investigation of ventilation performance of corner placed stratum ventilation in an office environment

    University essay from Högskolan i Gävle/Energisystem och byggnadsteknik

    Author : Gasper Choonya; [2019]
    Keywords : Stratum ventilation; local air change index; air change efficiency; ventilation effectiveness; draught rate; percentage dissatisfied; heat removal effectiveness;

    Abstract : Energy use in buildings account for about one third of the total global energy supply and contributes as much as 30% of the anthropogenic greenhouse gas emissions. It is estimated that energy use in buildings will increase to 67% by 2030. READ MORE

  6. 5. Fundamental study on the effect of pulsative inflow on a small scale room model : Simulation of an innovative ventilation solution

    University essay from Högskolan i Gävle/Avdelningen för bygg- energi- och miljöteknik

    Author : Naeim Rashidfarokhi; [2014]
    Keywords : CFD; Pulsative inflow; Mixing ventilation; Resolving stagnation zones;

    Abstract : Simulation of a wall jet in an enclosure performed to predict the effect of pulsation flow on improving the performance of mixing ventilation systems which are routine practices in industry. Comparing two flows with equal amount for constant and pulsation modes, it was found out that the same global airflow pattern exists for both of the cases but with generation of more eddies and local periodically velocity variations for pulsation mode. READ MORE