Essays about: "model-scale"

Showing result 6 - 10 of 14 essays containing the word model-scale.

  1. 6. Ventilation strategies for road tunnels in different countries and consequences using Fixed Fire Fighting System (FFFS)

    University essay from Lunds universitet/Avdelningen för Brandteknik

    Author : Rohan John Baptiste; [2017]
    Keywords : Longitudinal ventilation; fixed fire fighting system FFFS ; fractional effective dose FED ; Technology and Engineering;

    Abstract : A study is carried out on the ventilation strategies for road tunnels in different countries and consequences using fixed fire fighting systems (FFFS). The type of ventilation strategy for road tunnels can ensure the safety of people during the evacuation stages and protection of the rescue services during their intervention of the fire. READ MORE

  3. 7. Performance of cavity barriers exposed to fire : A model scale test

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Sara Gustafsson; Stina Jonsson; [2017]
    Keywords : Cavity barriers; Model scale test; timber; constructions; fire spread; glowing combustion; smouldering; cavities;

    Abstract : To build multi story buildings out of timber is of a common interest in the building sector. Timber as a building material has many profits, such as the low cost, the availability and the ability to recycle it, the low carbon footprint and the workability. READ MORE

  4. 8. CFD modelling of ski-jump spillway in Stornnforsen

    University essay from KTH/Marina system

    Author : Simon Eklund; [2017]
    Keywords : ;

    Abstract : Traditionally when designing dams and spillways, experiments in physical scale models are conductedin order to determine whether or not the design fulls it purpose, and to identify and avoid undesiredproblems, such as unfavourable ow patterns and unwanted water splatter. Physical models can oftenbe expensive and time consuming to build, and often suer from scale eects that in uence the results. READ MORE

  5. 9. Accuracy of transient versus steady state forces on a rudder operating in a propeller slipstream

    University essay from Umeå universitet/Institutionen för fysik

    Author : Erik Löfgren; [2015]
    Keywords : Unsteady flows; rudders; propellers; fluid mechanics; performance prediction; unsteady aerofoils;

    Abstract : In computational fluid dynamics (CFD), a transient simulation is in general more costly than computing the steady state of the system, if such a state exists. The velocity field produced by the propeller blades upstream of a rudder is transient in nature, and rudder design using CFD may therefore become very time-consuming. READ MORE

  6. 10. Development and verification of a wavepower drive train simulator

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Eysteinn Hjálmarsson; [2015]
    Keywords : ;

    Abstract : With increased attention on global warming, engineers have been looking into new and more environmental friendly ways to meet the world’s ever increasing energy demand. An exciting possibility is to harness the immense and untapped resource that lies in ocean waves. READ MORE