TY - CHAP A1 - Valero, Daniel A1 - Bung, Daniel B. A1 - Oertel, M. ED - Dewals, Benjamin T1 - Turbulent dispersion in bounded horizontal jets : RANS capabilities and physical modeling comparison T2 - Sustainable Hydraulics in the Era of Global Change : Proceedings of the 4th IAHR Europe Congress (Liege, Belgium, 27-29 July 2016) Y1 - 2016 SN - 978-1-138-02977-4 SN - 978-1-4987-8149-7 (eBook) U6 - http://dx.doi.org/10.1201/b21902-13 SP - 49 EP - 55 PB - CRC Press ER - TY - CHAP A1 - Valero, Daniel A1 - Bung, Daniel B. A1 - Crookston, B. M. A1 - Matos, J. ED - Crookston, B. ED - Tullis, B. T1 - Numerical investigation of USBR type III stilling basin performance downstream of smooth and stepped spillways BT - Session 1: Hydraulic structures T2 - Hydraulic Structures and Water System Management. 6th IAHR International Symposium on Hydraulic Structures, Portland, OR, 27-30 June 2016 Y1 - 2016 SN - 978-1-884575-75-4 U6 - http://dx.doi.org/10.15142/T340628160853 SP - 635 EP - 646 ER - TY - JOUR A1 - Valero, Daniel A1 - Bung, Daniel B. T1 - Sensitivity of turbulent Schmidt number and turbulence model to simulations of jets in crossflow JF - Environmental Modelling and Software N2 - Environmental discharges have been traditionally designed by means of cost-intensive and time-consuming experimental studies. Some extensively validated models based on an integral approach have been often employed for water quality problems, as recommended by USEPA (i.e.: CORMIX). In this study, FLOW-3D is employed for a full 3D RANS modelling of two turbulent jet-to-crossflow cases, including free surface jet impingement. Results are compared to both physical modelling and CORMIX to better assess model performance. Turbulence measurements have been collected for a better understanding of turbulent diffusion's parameter sensitivity. Although both studied models are generally able to reproduce jet trajectory, jet separation downstream of the impingement has been reproduced only by RANS modelling. Additionally, concentrations are better reproduced by FLOW-3D when the proper turbulent Schmidt number is used. This study provides a recommendation on the selection of the turbulence model and the turbulent Schmidt number for future outfall structures design studies. Y1 - 2016 U6 - http://dx.doi.org/10.1016/j.envsoft.2016.04.030 SN - 1364-8152 (electronic) VL - 82 SP - 218 EP - 228 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Valero, Daniel A1 - Bung, Daniel B. T1 - Development of the interfacial air layer in the non-aerated region of high-velocity spillway flows: Instabilities growth, entrapped air and influence on the self-aeration onset JF - International Journal of Multiphase Flow N2 - Self-aeration is traditionally explained by the water turbulent boundary layer outer edge intersection with the free surface. This paper presents a discussion on the commonly accepted hypothesis behind the computation of the critical point of self-aeration in spillway flows and a new formulation is proposed based on the existence of a developing air flow over the free surface. Upstream of the inception point of self-aeration, some surface roughening has been often reported in previous studies which consequently implies some entrapped air transport and air–water flows coupling. Such air flow is proven in this study by presenting measured air velocities and computing the air boundary layer thickness for a 1V:2H smooth chute flow. Additionally, the growth rate of free surface waves has been analysed by means of Ultrasonic Sensors measurements, obtaining also the entrapped air concentration. High-speed camera imaging has been used for qualitative study of the flow perturbations. Y1 - 2016 U6 - http://dx.doi.org/10.1016/j.ijmultiphaseflow.2016.04.012 SN - 0301-9322 VL - 84 SP - 66 EP - 74 PB - Elsevier CY - Amsterdam ER - TY - CHAP A1 - Valero, Daniel A1 - Bung, Daniel B. T1 - Interfacial velocity estimation in highly aerated stepped spillway flows with a single tip fibre optical probe and Artificial Neural Networks T2 - 6th IAHR International Junior Researcher and Engineer Workshop on Hydraulic Structures, May 30th to June 1st 2016. Lübeck, Germany N2 - Air-water flows can be found in different engineering applications: from nuclear engineering to huge hydraulic structures. In this paper, a single tip fibre optical probe has been used to record high frequency (over 1 MHz) phase functions at different locations of a stepped spillway. These phase functions have been related to the interfacial velocities by means of Artificial Neural Networks (ANN) and the measurements of a classical double tip conductivity probe. Special attention has been put to the input selection and the ANN dimensions. Finally, ANN have shown to be able to link the signal rising times and plateau shapes to the air-water interfacial velocity. Y1 - 2016 U6 - http://dx.doi.org/10.15142/T3Q590 ER - TY - CHAP A1 - Ulke, Bernd T1 - Boden, Baugrube, Verbau T2 - Zahlentafeln für den Baubetrieb N2 - Die Lösung den Baugrund betreffender Fragestellungen beginnen i. d. R. mit der Durchführung von Baugrunderkundungen, um alle notwendigen Parameter zu erhalten, die für die Planung und Durchführung von Bauvorhaben notwendig sind. Im Folgenden werden die wichtigsten Erkundungen in Abhängigkeit der erforderlichen Güteklasse der Proben beschrieben und vorgestellt. Y1 - 2016 SN - 978-3-658-02838-1 (Online) SN - 978-3-658-02837-4 (Print) U6 - http://dx.doi.org/10.1007/978-3-658-02838-1_10 SP - 1165 EP - 1246 PB - Springer Vieweg CY - Wiesbaden ET - 9., überarb. und aktual. Aufl. ER - TY - JOUR A1 - Uibel, Thomas T1 - Untersuchungen zum Spaltverhalten von Holzschrauben. Teil 1 JF - Bauen mit Holz Y1 - 2016 SN - 0005-6545 N1 - gedruckte Zeitschrift in der Bereichsbibliothek Bayernallee IS - 10 SP - 40 EP - 42 PB - Rudolf Müller CY - Köln ER - TY - BOOK A1 - Tünnemann, Thomas ED - Tünnemann, Thomas T1 - Formine : Neo Style : Workshop 2016 N2 - Leitung und Konzeption: Thomas Tünnemann, Professor für Gestalten, FB Architektur, FH Aachen: Mit Beiträgen von Miriam Azzab, Larissa Rohr, Janna Steinhart, Felix Reymann, Kevin Osterkamp, Mark Kieckhefer, Pia Bienert, Sarah Schuhmann, Hermann Stuzmann, Silvana Hecklinger, Thorsten, Köllen, Jesse Dilworth, Silke Wanders, Tomas Tünnemann und Jan Waschinzki Y1 - 2016 SN - 978-3-9811003-7-2 CY - Aachen ER - TY - JOUR A1 - Turaliyeva, M. A1 - Yeshibaev, A. A1 - Saparbekova, A. A1 - Akynova, L. A1 - Abildayeva, R. A1 - Sadenova, M. A1 - Sartayeva, K. A1 - Schieffer, Andre A1 - Digel, Ilya T1 - Species composition and injuriousness of stranger xylophilous fauna affecting indigenous urban dendroflora of Central Asia JF - Asian journal of microbiology, biotechnology & environmental sciences : AJMBES N2 - At the present time, one of the most serious environmental problems of Central Asia and South Kazakhstan is the ongoing large-scale deterioration of principal urban tree populations. Several major centers of massive spread of invasive plant pests have been found in urban dendroflora of this region. The degree of damage of seven most wide-spread aboriginal tree species was found to range from 21.4±1.1 to 85.4±1.8%. In particular, the integrity of the native communities of sycamore (Platanus spp.), willow (Salix spp.), poplar (Populus spp.) and elm (Ulmus spp.) is highly endangered. Our taxonomic analysis of the most dangerous tree pests of the region has revealed them as neobiontic xylophilous insects such as Cossus cossus L. (Order: Lepidoptera L.) Monochamus urussovi Fisch., Monochamus sutor L., Acanthocinus aedelis L. and Ñetonia aureate L. (Order: Coleoptera L.). We relate the origin of this threatening trend with the import of industrial wood in the mid 90’s of the last century that was associated with high degree of the constructional work in the region. Because of the absence of efficient natural predators of the pest species, the application of microbiological methods of the pest control and limitation is suggested. Y1 - 2016 SN - 0972-3005 VL - 18 IS - 2 SP - 359 EP - 366 PB - EM International ER - TY - CHAP A1 - Tran, Ngoc Trinh A1 - Tran, Thanh Ngoc A1 - Matthies, Hermann G. A1 - Stavroulakis, Georgios Eleftherios A1 - Staat, Manfred T1 - FEM Shakedown of uncertain structures by chance constrained programming T2 - PAMM Proceedings in Applied Mathematics and Mechanics Y1 - 2016 U6 - http://dx.doi.org/10.1002/pamm.201610346 SN - 1617-7061 N1 - Special Issue: Joint 87th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM) and Deutsche Mathematiker-Vereinigung VL - 16 IS - 1 SP - 715 EP - 716 ER -