A laminar boundary layer separates in a region of adverse pressure gradient on a flat plate, undergoes transition, and finally the turbulent boundary layer reattaches. Laminar-turbulent transition within this laminar separation bubble (LSB) is investigated by means of measurements with a Laser-Doppler-Anemometer (LDA), flow visualization in water and direct numerical simulation (DNS). The role ...

This paper presents a developed method for controlling multi-renewable energy generators. The control system depends basically on three sensors (wind anemometer, solar sensor, and voltage sensor). These sensors represent PLC’s analogue inputs. Controlling the output voltage supply can be achieved by an enhanced method of interlocking between the renewable energy generators, depending on those s...

Three-dimensional CFD studies of the mean airflow over various research ships and a generic tanker/bulk carrier have been performed. The bias in the wind speed measurements is highly dependent upon anemometer position and ship shape. Even for anemometers in well-exposed locations on research ships the wind speed may be biased by about 10 %. Anemometers located above the bridge of tankers/bulk c...

The manuscript reports experimental measurements of velocity components recorded with a sonic anemometer in the Atmospheric Boundary Layer (ABL) over homogeneous terrain. The goal of the work is to study the behaviour of the wind fluctuations integral scale, and so-called fractal dimension, at changing the atmospheric stratification. Temporal resolution is moderate, but this is not a problem in...

The manuscript reports experimental measurements of velocity components recorded with a sonic anemometer in the Atmospheric Boundary Layer (ABL) over homogeneous terrain. The goal of the work is to study the behaviour of the wind fluctuations integral scale, and so-called fractal dimension, at changing the atmospheric stratification. Temporal resolution is moderate, but this is not a problem in...