Fundamental studies on the electrothermal instability on the 1 MA Mykonos driver.
Abstract not provided.
Hatch, Maren Whiting↗
Engineering topics
Bauer, Bruno Steven
Publications and source records attributed to Bauer, Bruno Steven.
Using engineered defects to understand the seed for instabilities in current-driven metal.
Abstract not provided.
Yu, Edmund↗
Use of hydrodynamic theory to estimate electrical current redistribution in metals
Using the analogy between hydrodynamic and electrical current flow, we study herein how electrical current density j redistributes and amplifies due to two commonly encountered inhomogeneities in metals. First, we consider flow around a spherical resistive inclusion and find significant j amplification, independent of inclusion size. Hence, even μ m-scale inclusions can affect performance in applications by creating localized regions of enhanced Joule heating. Next, we investigate j redistribution due to surface roughness, idealized as a sinusoidal perturbation with amplitude A and wavelength λ . Theory predicts that j amplification is determined by the ratio A / λ , so that even “smooth” surface finishes (i.e., small A ) can generate significant amplification, if λ is correspondingly small. We compare theory with magnetohydrodynamic simulation to illustrate both the utility and limitations of the steady-state theory.
70 PLASMA PHYSICS AND FUSION TECHNOLOGY↗