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 1299 for “"Drag"”.
-
RuPaul's Drag Race and the Toronto Drag Scene
The debut of the television show RuPaul’s Drag Race (Barbato, Bailey, and Charles) in 2009 marked the start of a new drag boom. The program’s commercial success throughout the 2010s brought drag performance into the mainstream cultural arena, prompting a host of effects on the historically …
-
Drag Across Borders: Negotiating 2SLGBTQ+ Refugee/Migrant Being and Belonging Through Drag Personas
This qualitative study uses drag performance to better understand some of the complexity of 2SLGBTQ+ refugee and other migrant identities and experiences of in/exclusion from (national) belonging in Canada. Racialized Western border regimes and reception frameworks position refugees/migrants along …
-
Hydrodynamic drag force in liquids
… falling at constant velocity, the hydrodynamic drag force, D, is equal to the weight of the sphere, and the drag coefficient, CD, in the formula for the drag force, D = CD( 12rv2 )A could be evaluated as a function of Reynolds number, NR = rvah , and ball radius, a. In these formulas D is the …
-
Drag coefficients of vibrating synthetic rope
The drag, amplitude, frequency tension, diameter and length of synthetic ropes vibrating because of vortex-induced forces, and net vibrating at different tensions were measured. Photographs were taken of the vortices. Drag coefficients were calculated and plotted against Reynolds Number. The …
-
Turbulence measurements in drag reducing flow
… for wedge probes. The structure of turbulence in drag reducing soap and polymer solutions was studied using a hot-film wedge probe. Intensity of turbulence measurements in drag reducing fluids indicate that the structure of trubulence is strongly dependent on the condition of the solution. Rates …
-
Drag performance, identity, and cultural perception
… cross-dressed performers. It will situate drag performers within their cultural context in order to establish how their concerns, motivations, employment, communities, friendships, self-perception and artistic ambitions impact on their performances. Furthermore, it utilises performance and …
-
Aerodynamics drag reduction of commercial trucks
… Gull Wing truck, with a view to reducing the drag of the truck. To investigate the flow over the truck, a 1:20 scale double trailer truck model was designed and constructed from chipboard for wind tunnel experiments. The overall size of the model is 1100 mm long, 130 mm wide and 215 mm high. A …
-
Formationkeeping of spacecraft via differential drag
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1986.
-
Drag Measurements on an Ellipsoidal Body
A drag study was conducted on an oblate ellipsoid body in the Virginia Tech Stability Wind Tunnel. Two-dimensional wake surveys were taken with a seven-hole probe and an integral momentum method was applied to the results to calculate the drag on the body. Several different model configurations …
-
Droplet Drag Modeling on Spray Conditions
… on droplet dynamics. Although droplet drag is a classical area of study, there are still theoretical gaps in understanding the motion of large droplets. In applications such as spray combustion, droplets of various sizes are generated and move with the flow. Large droplets tend to …
-
Drag Reduction by Polymeric Additive Solutions
… known to effectively reduce turbulent friction drag by up to 80 %. Conducted in the Hydrodynamics Laboratory in Virginia Tech, this research presents a comprehensive analysis into drag reducing effects through experimental, theoretical, and computational analyses. A major focus of this research …
-
Projectile thrust-drag optimization with external burning
External burning increases base pressure. The characteristic and linearized equations with heat addition are discuss ed, and the condition for maintaining irrotationa ity with heat addition is derived. A transition model, which extends the Crocco-Lees base flow model, and a spin model are …
-
Predicting Drag Polars For Micro Air Vehicles
<p> Drag polars for three Micro Air Vehicles (MAVs) were measured at Reynolds numbers of 70,000, 50,000, 30,000, and 10,000 and compared to predictions generated using the classical approach. The MAVs tested had different configurations and aspect ratios varying from 1.2 to 1.6 and ratios of wetted …
-
Turbulent drag reduction by anisotropic permeable substrates
… substrates reduce turbulent skin-friction drag?' The first part of the thesis aims to extend the existing understanding on how complex surfaces of small texture size can reduce drag. We show that the effect of these surfaces can be reduced to an offset between the apparent, virtual smooth …
-
Planet formation, resonant drag instabilities, and vortices
… a whole class of instabilities called ‘resonant drag instabilities’ (RDIs). These appear in mixtures of gas and dust, when the two species drift relative to each other. I use linear perturbation theory and asymptotic methods in the limit of dilute dust to show that the dust’s drift allows the …
-
Inlet drag prediction for aircraft conceptual design
… the development of methods for predicting inlet drag. Originally, the drag of only one inlet type, the variable-geometry conical inlet, could be calculated within ACSYNT. This prompted the present research which resulted in the creation of a modular suite of subroutines that extend the capability …
-
Drag considerations for flight in atmospheric turbulence
… the combination that would produce the minimum drag for a given lift. Further, the center of gravity (CG) position which gives the desired lift distribution and at the same time, maintains aircraft trim is determined. Furthermore, a classic set of non-linear equations of motion for longitudinal …
-
Afterbody drag prediction for conceptual aircraft design
… complexity and the difficulty in afterbody drag prediction. This thesis documents a computationally inexpensive method for estimating the afterbody drag of aircraft during the conceptual design stage. The design and creation of a new hybrid approach to afterbody drag prediction is discussed. …
-
The tangential drag of an axially oscillating cylinder
An experimental investigation of the tangentiaì drag of an axially oscillating cylinder is presented. Deep-sea mooring cables are oscillated sinusoidally at ocean wave amplitudes and frequencies, and experimenta1 values of the tangential (friction) drag coefficient are obtained. The experimental …
-
Surface Structure and Its Effect on Reducing Drag
… tunnel was designed and fabricated to measure drag on small test models at low Reynolds numbers. The wind tunnel featured a sensitive strain gauge type load cell. The average drag coefficient of sphere and cube test models were used to validate the miniature wind tunnel, and the values obtained …
Page 1 of 65