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 18 of 18 for “"Fish Swimming"”.
-
Fish Swimming Performance: Insights from Theory and Experiments
L'abstract è presente nell'allegato / the abstract is in the attachment
-
Volumetric analysis of fish swimming hydrodynamics using synthetic aperture particle image velocimetry
… PIV system to study the hydrodynamics of freely swimming Giant Danio (Danio aequipinnatus). Volumetric particle fields are reconstructed using synthetic aperture refocusing. The experiment is designed with minimal constraints on animal behavior to ensure that natural swimming occurs. Resultantly, …
-
Fish swimming optimization and exploiting multi-body hydrodynamic interactions for underwater navigation
… living bodies contain rich information, which fish can read through a dedicated sensory system, the lateral line. Fish can even extract energy from these flow features. Immersed Boundary Methods (IBMs) are particularly well suited to simulate flows resulting from several moving bodies. In this …
-
Experimental study of fish response to turbulent flow fields generated by in-stream structures
… on habitat choice and migration path of fish is of great interest for biologists and engineers, especially when considering the impact of in-stream structures like dams or fish passages during stream restoration projects. Research is needed in both laboratory and field environments to …
-
Optimization of biomimetic propulsion in a fish like robot
… construction of a biomimetic carangiform robotic fish as a functional experimental apparatus, the prediction of propulsive forces based on mechanical fish tail linkage kinematics using a lift based theory, an experimental process to obtain fish swimming velocity data for a number of different swim …
-
Hydrodynamics of flexible-body swimming motions
The performance and agility of fish swimming motions have intrigued both biologists and fluid mechanicians for many years. Both have endeavored to understand the mechanics of fish swimming and to resolve the paradoxical observations surrounding the performance of fish, yet the unsteady …
-
Vorticity transfer through rapid area change
… of sinusoidal motion similar to bird flapping or fish swimming to generate the necessary forces. Few studies have been conducted to investigate the generation of maneuvering forces by using rapid vorticity transfer into the fluid through a rapid motion as observed in some animals. In this study a …
-
Modeling and control of a fish-like vehicle
… the extremely complex hydrodynamics of fish swimming, it is desirable to build a mechanical prototype. This allows better cooperation of the "vehicle" under study than would be allowed with a live specimen. Draper Laboratory has undertaken the design and construction of a free-swimming …
-
Design and experimental testing of metamaterial-based agitators
… agitators are expected to mimic the motion of fish swimming and agitate the flow in channels of the heat sink, which will mix the cool air and hot air. Instead of the cylinder widely used in VIV study, the wing of the agitator has a streamlined cross-section to reduce air drag while shedding …
-
Modelling of a Bio-inspired Bistable Structure for Potential Application in Fish Telemetry Tags
… long-term impacts on activities associated with fish stock and migration. One promising approach for long-term monitoring involves the development of self-powered telemetry devices capable of powering themselves by harnessing energy from the fish body undulations using implanted devices or from …
-
How does rock-ramp fishway surface texture affect the passage success of small-bodied Great Plains fishes?
… barriers that prevent the upstream movement of fish. State and federal resource management agencies have turned to fish passage structures to restore connectivity. However, the passage efficiency of current structures may be limited for native small-bodied fish species by a lack of information …
-
Robotics and power measurements of the RoboTuna
… constraining a vehicle within the geometry of a fish body. The bulk of the work in this study involves clarifying and solving issues with the mechanical and electrical systems of the RoboTuna. We worked toward making the prototype mechanism a robust laboratory instrument, de vising a strong …
-
Behavioural Ecology of Lake Trout: From Movement Ecology to Bioenergetics
… example, in temperate aquatic organisms such as fish, habitat use is limited by environmental conditions such as temperature and dissolved oxygen concentration, but also biotic variables like prey type, quantity and quality influence the habitat selection. This research investigates the …
-
Biologically inspired underwater propulsion and adhesion mechanisms
… underwater pipe inspection robot with both swimming and crawling capabilities as opposed to conventional in-pipe robots with wheeled designs or driven by propellers. The contents of this thesis include two different parts: a propulsion mechanism using a passive compliant tail and a …
-
Investigating the Impact of Metabolic Dysregulation on Nervous System Development and Function: A Study of CPT2 Deficiency in a Zebrafish Model System
… schizophrenia. To address the hypothesis, a zebrafish CPT2 deficient model system was developed to investigate CPT2 deficiency during early vertebrate development. Two knockdown morpholino oligonucleotides (MO), a translation blocker (TB) and a splice blocker (SB), were used to reduce CPT2 …
-
Vorticity control for efficient propulsion
… hydrodynamics. In this thesis, we study fish-like propulsion strategies as concepts in vorticity control. Our motivation for this research stems from the remarkable capabilities of fish to propel and maneuver in ways presumably optimized by evolution. First, we experimentally measured the …
-
Locomotor biomechanics and behaviour in the ocellate river stingray
Stingrays are fishes that are dorsoventrally flattened in the same plane as the substrate, similar to a hydrofoil, with long thin tails that have an absent or reduced caudal fin, and anterior to the pelvic girdle the longitudinal body axis is relatively rigid. These characteristics would appear to …
-
The Influence of Trailing Edge Shape and Kinematics on Bio-inspired Pitching Panels
… some engineers have turned to the study of swimming and flying animals to provide insight into the design of vehicles that move through air or water. For certain animals swimming in water, thrust is generated primarily by either a caudal fin or fluke located at the posterior end of the …