temperature gradient

AIR FLOW DYNAMICS IN THE CABIN OF A LOW-ENTRY CITY BUS

The paper investigates the dynamics of air flows in the cabin of a low-entry city bus to improve passenger comfort and energy efficiency. The modeling was performed by CFD analysis in Ansys Fluent using the Mercedes-Benz Citaro Hybrid cabin model. Under winter conditions (flow inlet temperature - 27°C, bus body walls - 0°C), the maximum flow velocity reached 3.69 m/s in the doorway area, while insufficient ventilation was found in the front and rear parts of the cabin (velocity <0.8 m/s).

Scientific achievements of the expeditions of the department of geodesy on refraction issues in the deserts of Central Asia

Purpose The aim is to describe the results obtained during the scientific geodesic expeditions of the geodesic department in the deserts of Central Asia in 1986-1987. The purpose of the expedition was to search for refractive indexes without determining the temperature gradient along the directed beam.