Essays about: "air entrainment"

Showing result 1 - 5 of 9 essays containing the words air entrainment.

  1. 1. Aspects of gating system improvement in a cast iron foundry

    University essay from KTH/Materialvetenskap

    Author : Fahami Annan Green; Felix Göttfert; [2021]
    Keywords : Gating system; Cast iron; Foundry; Pouring basin; Offset step basin; Sprue; Ingjutssystem; Gjutjärn; Gjuteri; Gjutskål; Förskjuten steggjutskål; Nedlopp;

    Abstract : The gating system transfers the iron melt from the ladle to the void in the casting mould. The gating systems dimensions and designs are crucial for the success of a casting and a poor gating system is a leading cause of scraps. READ MORE

  3. 2. Flux Measurements at Lake Erken

    University essay from Uppsala universitet/Luft-, vatten- och landskapslära

    Author : Christopher Greenland; [2021]
    Keywords : Turbulence; flux; exchange coefficients; UVCN-regime; COARE3.0 algorithm; variance;

    Abstract : Turbulent fluxes govern the exchange of momentum, heat and moisture between the Earth’s surface and the overlying air. Computations of these fluxes are crucial, particularly over lakes and seas because most of the earth’s surface consists of water. READ MORE

  4. 3. Evaluation of air entraining behaviour in concrete using computer aided methods on hardened samples

    University essay from KTH/Betongbyggnad

    Author : Jakub Pawlowicz; [2019]
    Keywords : concrete; air voids; air entraining; AEA; blast furnace slag; BFS; flat-bed scanner; BubbleCounter; traverse method;

    Abstract : Increasing awareness of sustainability in the concrete industry forces structural design and executionto focus on avoiding costly and unpredictable maintenance action, instead paying higher attention todamage prevention by direct actions on early stages of production. One of such approaches, whichdeals with the problem of freezing and thawing deterioration, is intentional air bubble introductionto the concrete mix. READ MORE

  5. 4. Experimental Investigation Of The Air-Water Flow Properties In The Cavity Zone Downstream A Chute Aerator

    University essay from

    Author : Ebba Wargsjö; Albin Hedehag Damberg; [2017]
    Keywords : Air bubble entrainment; chute aerators; aerators; air concentration; cavitation; cavitation damage; cavitation bubbles; bubble frequency; scale effects;

    Abstract : Chute aerators are widely used in spillways to avoid cavitation damage. When the water flow passes the aerator, two jets form – upper and lower jet. The purpose of this thesis has been to study the effects from the aerator by conducting experiments in a model with a flow depth large enough to ensure that the upper and lower jet remain separated. READ MORE

  6. 5. Study on free-surface aeration with high-velocity air-water flows in open-channels

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

    Author : Belkiz Hasan; Paulo Monsalve; [2017]
    Keywords : ;

    Abstract : China’s biggest source of the renewable energy is hydropower, with a share of 85 %, in 2013, of the total renewable power generation. For the tenth sequential year, China has maintained the country’s leading role in global hydropower development by installing more hydropower plants than the rest of the world combined. READ MORE