Sökning: "Darcy friction factor"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Darcy friction factor.

  1. 1. Experimental Investigation of High Prandtl Number Flow in Additive Manufactured Channels

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :LINDA YANG; [2023]
    Nyckelord :Additive manufacturing; Heat transfer; Darcy friction factor; Nusselt number; Minichannel.; Friformsframställning; Värmeöverföring; Darcy friction factor; Nusselt number; Minikanal.;

    Sammanfattning : Additive manufacturing (AM) rapidly evolves and expands into new industries dueto its great design freedom and time savings. Injection molding is an excellentindustry where AM can help reduce cooling time by printing complex coolingchannels for more effective and uniform cooling. LÄS MER

  3. 2. Experimental pressure loss analysis in a mini tube for a fully developed turbulent airflow. : Mini channels of lengths 22.5 mm to 150 mm in length with a constant diameter of 1.5 mm

    Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

    Författare :Soumen Ghosh; [2022]
    Nyckelord :Experimental fluid mechanics; Pressure drop; friction factor; Internal flow; fully developed flow; turbulent flow; Fluid mechanics; Ideal gas; Moody s chart; Additive manufacturing; compressible flow; turbine blade cooling; mini channel;

    Sammanfattning : The cooling systems in a gas turbine are especially important as the turbine blades and vanes are exposed to extreme temperatures. The relatively cool air is extracted from the compressors and fed to the turbines to cool the turbine blades. LÄS MER

  4. 3. Pipe Surface Roughness at Microscale and Discussion of Possible Relation to Flow Properties

    Master-uppsats, Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Författare :Yiting Qiao; Mahsa Kajbaf Nezhad; [2021]
    Nyckelord :pipe flow; roughness; microscale; SEM; Technology and Engineering;

    Sammanfattning : Despite decades of intense research, the behavior of water molecule still warrants new research.Water flow through various pipe systems has become a pivotal corner stone of functioning human infrastructure. LÄS MER

  5. 4. Experimental Investigation of the Thermal Performance and Pressure Loss in Additively Manufactured mini-channels

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Anna Nyhlen; [2021]
    Nyckelord :;

    Sammanfattning : Industrial gas turbines reach temperatures of 1500-2000K at high rotational velocities which means that much effort is spent on the design of an efficient cooling system. With the recent advances of the additive manufacturing (AM) industry, new design opportunities have open up for many industries and applications, including the design of cooling systems. LÄS MER

  7. 5. EXPERIMENTAL STUDY ON PRESSURE LOSSES IN ADDITIVELY MANUFACTURED AND MACHINED ORIFICES : A rectangular geometry of additively manufactured MA 247 orice and a circular geometry ofmachined AW-6082 T6 orifice study

    Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

    Författare :Jayadev Nambisan; [2020]
    Nyckelord :Cooling; Fluid Dynamics; Additive Manufacturing; Pressure Losses; Fluid Dynamics Testing; Machining; Gas Turbines; Gas Turbine Cooling; Nouveau Geometries;

    Sammanfattning : Gas turbine components for cooling purposes including other unique and complex three-dimensional designs could be made explicitly possible through additive manufacturing using SLM technology in contrary to the conventional machining processes. Nevertheless, the surface roughness and subsequently the friction factor governs thepressure drop in these components implicitly, thus, influencing the secondary air flow system of a gas turbine. LÄS MER