Tiemo Mathijssen

Koninklijk Nederlands Meteorologisch Instituut | KNMI

This paper describes the commissioning of the flexible asymmetric shock tube (FAST), a novel Ludwieg tube-type facility designed and built at Delft University of Technology, together with the results of preliminary experiments. The FAST is conceived to measure the velocity of waves propagating in dense vapours of organic fluids, in the so-called no...

The cumulative global capacity of organic Rankine cycle (ORC) power systems for the conversion of renewable and waste thermal energy is undergoing a rapid growth, and is estimated to be approx. 2;000 MWe considering only installations that went into operation after 1995. The potential for the conversion into electricity of the thermal power coming...

New promising applications of organic Rankine cycle (ORC) technology, e.g., concentrated solar power, automotive heat recovery and off-grid distributed electricity generation, demand for more dynamic operation of ORC systems. Accurate physically-based dynamic modeling plays an important role in the development of such systems, both during the preli...

An experimental investigation has been made of the flowfield on the leeward surface of a sharp-edged delta wing with a Λ = 65° sweep angle at several incidence angles, of which α = 15° is presented. The measurements have been performed at a Mach number of 1.95 in a blow-down windtunnel with a 280 mm× 260 mm test section using a stereoscopic PIV set...

Application of the scaled fundamental equation of state of Balfour et al. ( Phys. Lett. A, vol. 65, 1978, pp. 223–225) based upon universal critical exponents, demonstrates that there exists a bounded thermodynamic domain, located within the vapour–liquid equilibrium region and close to the critical point, featuring so-called negative nonlinearity....

The cumulative global capacity of organic Rankine cycle (ORC) power systems for the conversion of renewable and waste thermal energy is undergoing a rapid growth, and is estimated to be approx. 2,000 MW_e considering only installations that went into operation after 1995. The potential for the conversion into electricity of the thermal power coming...

Non-ideal compressible fluid dynamics (NICFD) are defined as compressible fluid flows occurring in the dense vapour, dense vapour-liquid equilibrium or supercritical thermodynamic region. This type of flow can occur in expanders of organic Rankine cycle power plants. In order to study NICFD, a Ludwieg tube-type facility has been designed and constr...