Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 2405 for “"Turbulent"”.
-
Turbulent wakes in turbulent streams
… cases the wake was introduced to<br/>various turbulent streams having various levels of turbulence intensity and length scales. It<br/>was found that the presence of the free-stream turbulence changes the wake’s decay rate and<br/>does not allow self-similarity to occur (unless maybe very far …
-
Unsteady Turbulent Thermal Convection
Made available in DSpace on 2014-12-13T19:55:28Z (GMT). No. of bitstreams: 1 7913452.pdf: 6971677 bytes, checksum: aee66dfa593fbae28d95ce38bdda394c (MD5) Previous issue date: 1978
-
Turbulent flows over canopies
In this thesis, turbulent flows over canopies in the sparse and dense regimes are examined using direct numerical simulation. The term `canopy' is used to refer to tall roughness elements in the flow. Sparse canopies typically have large element spacings and allow turbulent eddies to penetrate …
-
Modelling of turbulent swirling flows
… of non-reacting and reacting anistropic turbulent, swirling flows using popular turbulence models with a robust numrical procedure. The performance of these turbulence models is assessed and compared against experimental data for anisotropic, turbulent swirling flow in a cylindrical pipe …
-
Mechanisms of turbulent flame propagation
… are reported of premixed hydrogen-air turbulent burning velocities, made by the double kernel method during explosions. Turbulence was created by four high speed fans driven by electric motors within the explosion vessel. This arrangement created a central region of uniform, isotropic …
-
Turbulent Flow Over Rough Surfaces
… obtain a better understanding of the turbulent flow structure in repeated-rib geometry rough-walled surfaces in two size pipe systems as a function of the ratio of roughness height to spacing distance between the elements (P/K), the axial variation of the flow, and the flow rates. The …
-
Modelling of turbulent stratified flames
… the simulation of two laboratory scale flames, a turbulent stratified V-flame and a dump combustor fed by two streams of different mixture strength. This work highlights the importance of this quantity and its influence on the simulation results. Any model for stratified combustion requires at …
-
Simulations of turbulent swirl combustors
… explores the structure of the Delft III piloted turbulent non-premixed flame. The simple configuration allows to analyze further key combustion aspects of combustors, with further insights provided on the dynamics of localized extinctions and re-ignition, as well as the pollutants emissions. The …
-
Vapor condensation on turbulent liquid
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1991.
-
Three-dimensional turbulent boundary layer
Thesis (Sc.D.) Massachusetts Institute of Technology. Dept. of Mechanical Engineering, 1957.
-
Turbulent transport of inertial aerosols
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1991.
-
A turbulent combustion noise model
A turbulent combustion noise model based on first principles is developed in this thesis. The model predicts (1) the pressure time series, (2) Sound Pressure Level (SPL) spectrum, (3) Over-All Sound Pressure Level (OASPL), (4) the thermoacoustic efficiency, (5) the peak frequency, and (6) the sound …
-
Statistical description of turbulent reacting media
… the interaction of chemistry and turbulence in a turbulent reacting flow. Both self-ignition and flame propagation are studied. For self-ignition study, the combined effects of temperature/concentration inhomogeneities and turbulence were studied numerically. For this purpose two statistic …
-
Kinematics of Vortices in Turbulent Flows
… a hierarchy of vortices in the physical space of turbulent flows is commonly extended to Fourier space. Through an analysis of Gaussian vortices, we explore the concept a vortex in Fourier space in terms of local flow kinematics. We find that interpreting a hierarchy of vortices in Fourier space …
-
Numerical Simulation of Turbulent Particle Diffusion
… for the Markov chain (required for inhomogeneous turbulent flows) was extended to include effects of particle inertia and virtual mass to enable simulation for a wide range of Stokes numbers. The CRW results with the finite Stokes incremental drift velocity and the modified Markov chain agreed …
-
Turbulent Separated Flow Over Wavy Surfaces
… data acquisition. Time-averaged velocity, turbulent intensity, skewness, and flatness data are given.
-
Turbulent Flow Over Solid Wavy Surfaces
Made available in DSpace on 2014-12-08T23:18:31Z (GMT). No. of bitstreams: 1 7020941.pdf: 3575182 bytes, checksum: 2d043c8d50da6efc5e88f1d7d9181517 (MD5) Previous issue date: 1970
Page 1 of 121