Simulation of tidal patteren of Tapi river esturine section in a physical hydraulic model at GERI, Gujarat to study the flooding patteren

Abstract

Central Water & Power Research Station (CWPRS), Pune has developed and installed a PC based Automatic Tide Generating (ATG) system at Tapi river physical hydraulic model, at Gujarat Engineering Research Institute (GERI), Vadodara. The purpose of this ATG system is simulation of tides in the model and to study the tidal effect from Arabian on Tapi river flow and discharge from the Ukai dam. With the help of this ATG the model officers simulate the spring and neap tide condition at Surat city location and obtained the flood levels in the model and provide solution for prevention/minimization by raising the embankments along both the banks of Tapi river with effects of tides at various outflow for protection of Surat city after considering the flood conditions in the year 2006. Optimization of embankment design i.e. height, adequate length and location were assessed by the physical model studies considering spring and neap tide situation. This is robust tide simulation system evolved as a result of continuous research & development efforts carried out since last forty years at CWPRS, Pune.

Keywords:

• Tide
• physical model automatic tide generating (A.T.G)
• simulation
• proportional integral derivative (PID) controls

Acknowledgement

The authors wish to thank to Dr. M.K. Sinha, Director, CW&PRS for guiding and giving his consent for publishing this paper. Our sincere gratitude to Shri S.R. Jagtap, Joint Director who encouraged us during preparation of this paper. We are thankful to Shri S.T.Patil, Assistant Engineer and Shri K.S. Murthy, Junior Engineer of Instrumentation division for their valuable support during installation, testing and calibration of A.T.G system & the team members of mechanical division for their help in fabrication and installation of mechanical assembly of ATG system. We are thankful to GERI, project authority Shri P.B. Choudhari, Research Officer and Shri M. Khan, Research Officer for their kind support during installation, testing of ATG system at GERI, Vadodara, Gujarat.