Germany - Scientific and technical engineering services

Description

The contractor (CO) carries out the necessary partial steps for the creation of hydraulic 1D or 2D models (software: SOBEK, Delft3D FM) as required. The service includes the supplementation, extension or updating of existing large-scale models of the BfG as well as the performance of hydraulic calculations. It will not be the Contractor's task to completely rebuild large-scale models (model rebuilding).
The items / partial steps to be processed by the Contractor include:1. updating/processing of digital terrain models (DTM)a) integration of new available terrain data (e.g. area soundings, groyne rehabilitation) into existing DTM,b) extension of existing DTM into the area,c) height and position transformation of existing DTM,d) GIS-based evaluations on the basis of DTM data (e.g. content lines, filling curves),e) calculation of the hydraulic flow rate in the area,f) calculation of the hydraulic flow rate in the area,g) calculation of the hydraulic flow rate in the area,h) calculation of the hydraulic flow rate in the area,i) calculation of the hydraulic flow rate in the area,j) calculation of the hydraulic flow rate in the area. 2. construction of transverse profile data sets or computational grids for hydraulic 1D-/2D-models.a) examination and plausibility check of the data bases supplied by the client by means of suitable methods,b) construction of transverse profiles (QP) on the basis of QP-traces for 1D-models (discrete, with Baseline/Gis2Prof/ArcSOBEK) or of computational grids for 2D-models.3Construction of hydraulic 1D-/2D-modelsa) Examination of hydraulic data bases (e.g. water level fixations, W- and Q-time series, information on structure control),b) Derivation of all relevant model files (geometries, roughnesses, boundary conditions, structure controls) from supplied data and for supplied or created cross sections or computational grids using suitable tools and methods (e.g. BASELINE, ArcSOBEK). Subsequently, construction and provision of the model or connection of partial models to the existing model.4. steady-state and transient (re-)calibration of hydraulic 1D-/2D-models of the BfG on (partial) sections, e.g. in case of new hydrological bases or changed terrain bases. If necessary, automated methods are to be used, such as OpenDA.5Carrying out of stationary water level calculations for data sets for the river hydrological service of the BfG (FLYS) with updated and existing 1D-/2D-models.a) Plausibility check of the equivalent longitudinal discharge sections supplied by the client by means of suitable methods,b) Construction of the model states or simulation runs, incl. the upper and lateral, corresponding boundary conditions, and the calculation of the water levels. c) Consideration of the currently valid discharge and damming target regulations for the dams in the model area,d) Calculation of the water level positions incl. flow patterns for stationary discharge conditions for equivalent discharge developments,e) Proof of stationarity,f) Evaluation, plausibility check and presentation of the simulated discharge, water level and mean longitudinal velocity sections for all hectometer stations.6. transformation and plausibility check of existing 1D-/2D-models into new software versions.7Transformation of existing 2D-models of third parties (software: HydroAS-2D or others) into 1D- and 2D-models based on the software products commonly used in the BfG (software: SOBEK, Delft3D FM),8. Execution of steady-state and transient 1D-/2D computational runs with the large-scale models of the BfG for model validation, for model comparisons, scenario calculations and to support the analysis of changes in the modelled water body; visualisation of the model results by appropriate graphics and/or tabular evaluations, GIS-based evaluations on the basis of DTM data (e.g. content lines, filling curves, water quality). 9. optimisation of calibrated models with regard to computation time, in particular through targeted adaptation of spatial and/or temporal discretisation as well as through simplification of structure controls; model validation and technical evaluation of the effects,10. training and support of the BfG in the operation of complex 1D-/2D-models using RTC-toolsFor all services according to No. 1-9, technical reports are to be prepared for documentation and quality assurance is to be carried out. For this purpose, a corresponding quality assurance concept shall be submitted with the bid.

Opportunity closing date

22 June 2021

Value of contract

to be confirmed