iRIC Software Logo

Download
Download

Solvers

Nays2DH

Nays2DH is a computational model for simulating horizontal two-dimensional (2D) flow, sediment transport, morphological changes of bed and banks in rivers.

MORE

FaSTMECH

“FaSTMECH (Flow and Sediment Transport with Morphological Evolution of Channels)” is a river flow / riverbed variation analysis solver developed by Dr. Jonathan Nelson of the U.S. Geological Survey (USGS).

MORE

SRM

The Storage Routing Model (SRM) solver is a runoff calculation solver that uses storage routing models. The models had been developed by Dr. Kiyoshi Hoshi, former Director General of the Hokkaido Civil Engineering Institute (the current Civil Engineering Research Institute for Cold Region, Public Works Research Institute) and former Research Director of the Research Institute of the Foundation of Hokkaido River Disaster Prevention Research Center (the current River Center of Hokkaido). The model has been improved to apply to a solver for iRIC by Dr. Makoto Nakatsugawa of Muroran Institute of Technology, Dr. Tomohide Usutani of Japan Weather Association and Terumasa Nishihara of Civil Engineering Research Institute for cold region. The solver consists of two types of storage routing models: a synthetic storage routing model and a two-cascade storage routing model. The solver is equipped with two functions: One can calculate runoff amount from rainfall, while another can optimize parameters of the storage routing model. Using the iRIC GUI, you can calculate the runoff by applying rainfall data (or rainfall and discharge data) to this solver.

MORE

Morpho2DH

Morpho2DH is the horizontal two dimensional debris/mud flow analysis solver which can reproduce the transport and deposition process of debris/mud flow due to the landslides. Structures (ex. sabo dam, weir, house and so on) and horizontal distribution of erosion depth can be considered in the analysis.

MORE

Nays1D+

Nays1D+ is a one-dimensional solver for rivers with general cross-sectional shape. This solver can calculate flows by non-uniform steady flow model as well as unsteady flow model. The solver also calculate bed deformation considering bedload. The obstacles such as bridge pier and spur-dikes, inflow from tributaries can be also considered in the computaions. You can visualize the results using two-dimensional visualization window equiped in iRIC with the methods of color contour, vectors, particl trace, ets.

MORE

CERI1D

CERI1D is a solver for one-dimensional (1D) unsteady flow calculation. The calculation model was developed by Yasuhiro Yoshikawa of the Civil Engineering Research Institute for Cold Region (at Kitami Institute of Technology as of November 2012), and the model was improved to create a solver for iRIC by Takuya Inoue from the Institute and Michihiro Hamaki from Kaihatsu Koei Co., Ltd.

MORE

Culvert Analysis Program (CAP)

U.S. Geological Survey Culvert Analysis Program (CAP)

MORE

Slope Area Computation (SAC)

SAC can be used to compute peak flood discharges from measurements of high-water marks along a stream reach. The slope-area method used by the program is based on the U.S. Geological Survey (USGS) procedure presented in Techniques of Water Resources Investigations of the U.S. Geological Survey, book 3, chapter A2, "Measurement of Peak Discharge by the Slope-Area Method".

MORE

Mflow_02

Mflow_02 is an analysis solver to calculate two-dimensional plane unsteady flow and riverbed variation by unstructured meshes of finite element method in orthogonal coordinate system (Cartesian coordinate system). The original version of Mflow_02 was based on programdeveloped in late 1980s by G. Tomitokoro of Shinshu University. Thereafter, M. Gamou (former staff of Pacific Consultants Co. Ltd, current Gamou Intelligent Technology Co. Ltd. (G.I.T.)), K. Hamaguchi and M. Ichiyama(Pacific Consultants Co. Ltd) led the core work to expand and develop the model, firstly added some functions like moving boundary model and riverbed variation calculation, etc.. It has been registered as a calculation solver for iRIC Version2.3 in (July) 2014.

MORE

River2D

River2D is a two dimensional depth averaged finite element hydrodynamic model that has been customized for fish habitat evaluation studies.

MORE

NaysCUBE

The basic equations of three-dimensional flow that incorporate the dynamic water pressure. This solver can simulate the fully three-dimensional flow phenomena, such as, the secondary current of the first kind, the horseshoe vortex around river structures, etc., and associated bed morphodynamic features. So, this solver can cover wider range of phenomena compared with 2D models, although it requires one-order (or more) larger CPU time. Therefore, this solver is suitable to be applied not on wide region of a river but on a limited portion for detailed analysis. The right figure shows an example for simulated the secondary flow of the first kind at a river bend.

MORE

NaysEddy

In river engineering problems, the flow cannot always be approximated by two-dimensional models.

MORE
> Solvers