- Jun 29 2019
- hosseinamini4

Dear guys

I tried to find a page that related to the errors of the console directly but I could not find. I will be thankful if you put errors here to solve it in detail here.

Capture.JPG

iRIC does not ensure the safety of the attached file.

iRIC does not ensure the safety of the attached file.

## コメント

First question:

I tried to model the Kinoshita model based on the example of a sinuous channel (with that hydrologic data) but I couldn’t. It took error from me. How can I solve it?

Regards

Hossein

dear Im a new learner. do you know how to simulate a meandeing river like the website demo video named Calculation of meandering by adaptive moving grid?my email is: 1272149587@qq.com. thanks!

I did the model with Kinoshita channel. what is the error you got? Can you send me the model you create. May be I can help you.

May be as the basic step you can reduce the time step and check.

Dear

I already reduced the time step into (0.001) but again it did not work. Also, I decided to create sinus model with the angle of 90 degrees. in this model also, I could reach to the result.

Nays2DH Solver Version 1.0.0000 Last updated 2014/5/4

Copyright(C)2003-2014 by Yasuyuki SHIMIZU, Hokkaido Univ., Japan, and Hiroshi T

AKEBAYASHI, Kyoto Univ., Japan, All Right Reserved

0.000 1.0000 0.3343 0 out

Calculation is failure!

Regards.

Is it possible to attach your model here?

Dear

Sure, I’ll do it. I have to model and both of them are uploaded on the cloud.

1- https://drive.google.com/file/d/1DN0lK3p6RS3AmL4EpPHV5C5iPY7GrvuR/view?usp=sharing

2- https://drive.google.com/file/d/1leRXH0lnz9ga0bQ_hqQPH4M-tXR7DcZR/view?usp=sharing

I could solve your no 1 model by increasing the size of grids (reducing number of grids in lateral direction to 10 and no of grids in one wave length to 20 instead of 20 and 40). Here I use 0.005 as the time step. Also I kept bed deformation disabled.

Alternatively you may run the same model you created by reducing your time step to 0.0001.

Dear c.niroshinie

I have also some questions about the principles of i-RIC: Does the software solve the problem stationary or time-dependent? Also, in terms of bed deformation, how we can define the bed current conditions like the formation, soil grading?

Regards

hossein

I am sorry, I am also a new user and my answers also according to the extent I understood.

I am not very clear about your problem.

However, as I understood

For condition of soil – you can add soil grading curves if you select solver type advanced instead of standard calculation. There you can add soil grading curves in non uniform bed material.

Regarding the bed formation, if you meant the fixed bed, you can add data in the geographic data – elevation of fixed bed.

Dear guys

please kindly tell me the way to enable satellite image in IRIC.

In satellite images classification and change detection, one will need reference points. One set of reference points is used to train a satellite image classification algorithm and another one to calculate the accuracy of the classified image. Two common methods to get such reference points are:

1) Using already developed land use/landcover map of the study area as a reference (this method is adopted when the study area is inaccessible or there is a time limitation)

2) If the study area is accessible then the best way is to undertake a GPS survey of the area to collect reference points. This is the best method which a remote analyst considers to get best results. The process is also known as ground referencing or ground-truthing.

Once you have reference points then you can develop an error matrix and calculate the kappa coefficient. Moreover, the accuracy of change detection (post-classification comparison method) will depend on the accuracy of classified images along with the accuracy of images registration given that both images are taken from the same sensor with same specs.

https://ahmedabad.crbtech.in/mechanical-design-training-programm/