We reveal for the first time by experiments that within a narrow parameter regime, two cavitation bubbles with identical energy generated in antiphase develop a supersonic jet. High-resolution numerical simulation shows a mechanism for jet amplification based on toroidal shock wave and bubble necking interaction. The microjet reaches velocities in excess of 1000  m s−1. We demonstrate that… [read more]

Laser-based powder bed fusion (LPBF) is a manufacturing process that allows for creating materials with local variations in properties and alloys. One promising technique being researched is the shaping of the laser beam used in the process. Traditionally, a Gaussian laser beam profile is used, which has a high energy peak in the center and strong energy gradients. An alternative is the point-ring… [read more]

On Wednesday, June 12, 2024, the Technical University of Munich will open its doors for Sustainability Day, which has the motto "We walk the talk". We warmly invite all students, employees and external guests to find out about and get involved in the diverse sustainability topics and activities of our university from 12:00 p.m. to 10:00 p.m. in the Mechanical Engineering building in Garching. [read more]

Die Motivation für thermische Prosumernetze ist es, die Vorteile einer netzbasierten thermischen Energieversorgung mit den Vorteilen einer dezentralen Versorgung in einzelnen Gebäuden zu verbinden. Je nach individuellem Bedarf und dem Zustand des Gesamtsystems entnehmen dezentrale Prosumer Energie aus dem Nahwärme- bzw. Nahkältesystem (DHC) oder speisen Energie in dieses ein. Dies soll die Nutzung… [read more]