Search for dissertations about: "secondary breakup"

Showing result 1 - 5 of 10 swedish dissertations containing the words secondary breakup.

2. 1. Modelling of Multicomponent Fuel Sprays

   Author : Vignesh Pandian Muthuramalingam; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; multicomponent fuel sprays; diesel and gasoline engine conditions; CFD; resolving counterbore; GDI injector; resolving injector orifice; secondary breakup; stochastic blob and bubble model; differential evaporation;

   Abstract : The use of fuel blends (conventional fuels blended with renewable ones) has gained importance in the automotive industry as an option to reduce emissions and dependence on fossil fuels. In order to make the fuel blends commercially viable, computational fluid dynamics (CFD) is used to complement the experiments (done on engines or spray chambers) by providing fundamental insight into spray formation. READ MORE

4. 2. Secondary ice production : An empirical formulation and organization of mechanisms among simulated cloud-types

   Author : Akash Deshmukh; MERGE: ModElling the Regional and Global Earth system; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; ice; collision; ice production; ice enhancement; secondary ice; sublimation; fragmentation;

   Abstract : Clouds are essential elements within Earth's atmosphere, posing a challenge for cloud-resolving models in understanding the creation of new cloud ice particles from existing ice and liquid phases. Such ice initiation determines cloud microphysical and radiative properties, influencing cloud phase, precipitation and cloud extent/properties. READ MORE

5. 3. Improved Cloud Parameterization in Global Climate Model : Aerosol effects and secondary ice production mechanisms

   Author : Arti Jadav; MERGE: ModElling the Regional and Global Earth system; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Cloud; Coud parameterization; Primary ice mechanisms; Secondary ice production; Global climate model;

   Abstract : The response of clouds to the changes in climate is uncertain, and the representation of the cloud-climate feedback is a key challenge in the global circulation models (GCM) for future climate projections. Factors contributing to this uncertainty include processes that involve particles of various sizes and phases, as well as the interactions between these particles and the surrounding atmosphere. READ MORE

6. 4. Scenarios of drop deformation and breakup in sprays

   Author : Tímea Kékesi; Lisa Prahl Wittberg; Gustav Amberg; Mireia Altimira; Stéphane Zaleski; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering Mechanics; Teknisk mekanik;

   Abstract : Sprays are used in a wide range of engineering applications, in the food and pharmaceutical industry in order to produce certain materials in the desired powder-form, or in internal combustion engines where liquid fuel is injected and atomized in order to obtain the required air/fuel mixture. The optimization of such processes requires the detailed understanding of the breakup of liquid structures. READ MORE

7. 5. Investigation of jet pulsation effects on near-nozzle mixing and entrainment

   Author : Alexander Nygård; Laszlo Fuchs; Lisa Prahl Wittberg; Mireia Altimira; Xandra Margot; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Sprays; Nozzle; Mixing; Pulsation; Engineering Mechanics; Teknisk mekanik;

   Abstract : Turbulent jet flows are very common in engineering applications. One example is that of fuel injection in internal combustion engines, which is closely related to the combustion process. Because of the widespread use, the resulting emissions of such engines have a significant impact on human health and the environment. READ MORE