TY - SER TI - Journal of Hydraulic Research. Vol. 29 No. 5 (1991) PY - 0000///[date of publication not identified] CY - Rotterdamseweg : International Association fot Hydraulic Research. N1 - It contains of Papers and Discussions for 1991 in Vol. 29 No. 5; The fourth generation of numerical modeling in hydraulics / Michael B. Abbott, Karsten Havno and Sten Lindberg. Vertical thermal-buoyant jets / Douglas G. Jones and Raouf E. Baddour. Entrainment and mixing in plane turbulent jets in shallow water / M. Giger, T. Dracos and G. H. Jirka. Drifting behavior of a conductivity probe / F. Ncube, E. G. Kastrinakis, S. G. Nychas and K. E. Lavdakis. Aeration of a free jet above a spillway / H. Chanson. A characteristics model of transient friction in pipes / Alan E. Vardy and Kuo-Lun Hwang. Entrance region of circular pipes flowing partly full / N. Rajaratnam, C. Katopodis and M. A. Sabur. A note on turbulence calculations in the wave boundary layer / Peter Justesen ER -