Heat transfer in separated flows on the pressure side of turbine blades

Heat transfer in separated flows on the pressure side of a typical high lift turbine profile is numerically investigated by means of an in-house CFD code. The numerical code was first validated on attached flows in turbine blades. To obtain flow separation cases, the profile is subject to large negative incidences so that a separation bubble is obtained at the pressure side. The numerical results are compared to available experimental data for code validation. It is shown how local minima and maxima values of the heat transfer coefficient are related to the separation and reattachment points, where the velocity component perpendicular to the wall is shown to have a significant effect on the heat transfe

Ergebnisse der nationalen Studie EVAMAR II zum Fach Deutsch

Aus der inhaltlichen Analyse zu den Lehrunterlagen an Universitäten geht hervor, dass bei Erstsprache – im Gegensatz zu den EVAMAR-II-Testfächern Mathematik und Biologie sowie weitere Maturafächern – nicht die typischen gymnasialen Fachinhalten unabdingbare Grundlage für die allgemeine Studierfähigkeit sind. Kenntnisse in deutscher Literaturgeschichte z. B. werden ausserhalb der Germanistik in keinem der untersuchten Studienfächer zwingend vorausgesetzt

Editorial: Learning in times of COVID-19: students', families', and educators' perspectives

Whilst writing this editorial, we are looking back at almost 2 years of crisis due to the COVID-19-pandemic. From a first unprecedented lockdown in March 2020, after the first cases of this new virus disease were detected, to a series of more lockdowns, and hygiene regulations, it seems worthwhile to summarize findings that shed light on the situation of the education system. The present special issue on “Learning in times of COVID-19: Students', Families', and Educators' Perspectives” contains a collection of international empirical papers that analyze the situation of schoolteachers, pupils, university teachers, students, children, and parents. It offers insights into the situations of countries that had comparatively mild measures in place (e.g., Switzerland; cf. Garrote et al.; Helm and Huber) to countries that imposed weeks-long national lockdowns that completely isolated the country (such as Australia; cf. Martin et al.). Worldwide, parents had to juggle working from home while homeschooling or watching their children at the same time. Teachers and pupils had to move lessons online and get used to remote teaching formats. The same happened to university teachers and students around the world. Now, there is a generation of young people who have hardly seen their educational institution from the inside for the past 2 years and who, not to mention, suffered from severe contact restrictions that, in some cases, led to extreme social isolation. All of this was embedded in a situation of uncertainty regarding how the crisis would develop. The current special issue includes 40 research articles from all over the world that examined consequences of the pandemic in the educational context from multiple perspectives. Below, we present the articles according to four themes, pertaining to the situation of families, pupils, teachers and schools, and university students