Sökning: "transition to turbulence"
Visar resultat 1 - 5 av 22 uppsatser innehållade orden transition to turbulence.
1. Diversifying a Real Estate Portfolio Through Infrastructure Investment : An Interview Study of Opportunities and Challenges in the Nordics
Master-uppsats, KTH/Fastighetsföretagande och finansiella systemSammanfattning : Since the financial crisis infrastructure has become an increasingly attractive asset class for investors, especially among financial institutions, who recognize the value of diversification opportunities within infrastructure. In parallel with the emergence of infrastructure as an investable asset class, the global financial turbulence has generated even greater incentives for investors to diversify their portfolios with infrastructure, as the asset class exhibits characteristics to navigate in a more challenging economic environment. LÄS MER
2. CFD Based External Heat Transfer Coefficient Predictions on a Transonic Film-Cooled Gas Turbine Guide Vane : A Computational Fluid Dynamics Study on the Von Karman Institute LS94 Test Case
Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningsläraSammanfattning : The turbine inlet guide vanes of a gas-turbine are subjected to extreme hot gas temperatures which increases the risk of mechanical failure and overall reduces the component lifespan. Hence, it is of great interest for gas-turbine manufacturers to establish methods for accurately estimating the temperature distribution along the vane surface. LÄS MER
3. Primordial Gravitational Waves and ultra-light Dark Matter in a complex singlet extended Standard Model
Kandidat-uppsats, Lunds universitet/Partikel- och kärnfysik; Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisationSammanfattning : In this thesis, the consequences of extending the internal symmetries of the standard model with a complex singlet scalar field, are investigated in terms of dark matter phenomenology and the possibility of primordial gravitational wave detection utilizing space based laser interferometry. The scalar potential of the model is constructed with a Z2 symmetry, which allows for the retainment of a linear and a quadratic coupling parameter, as well as a stable dark matter candidate, and an additional non-zero vacuum expectation value for the real component of the scalar field. LÄS MER
4. On the Identification of Nonlinear Optima in Spatially Developing Boundary Layer Flow
Master-uppsats, KTH/Strömningsmekanik och Teknisk AkustikSammanfattning : The present thesis studies transition to turbulence in a spatially developing bound-ary layer for subcritical Reynolds numbers. A fully nonlinear iterative direct-adjoint optimisation technique is employed to identify finite amplitude perturbations triggering transition in an energy efficient way. LÄS MER
5. A Topology-Based Method for Inferring Turbulence in Unsteady Flows
Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)Sammanfattning : Understanding the rise and evolution of turbulence is an important component of designing vehicles and turbomachinery that both have long life and are efficient. To this end, researchers study the complex phenomenon of turbulence. LÄS MER
