Well,

that depend on parameters used in your application.

Sincerely

hi

totally the hydro-logical model is better

faithfully yours

A hydraulic model is a mathematical model of a fluid flow system and it's used to analyze hydraulic behavior.

Hydrological modeling helps in understanding, predicting, and managing water resources.

There isn't a 'better' model - they differ as Hassan explained. To add to his response, hydraulic modelling is generally used for depth-velocity relationships and is used in channel flooding studies whereas hydrologic modelling is used to estimate the volume or peak rate of runoff (& its relationship with time) that may or may not end up in these channels.

Thanks a lot Hasan sir & Kartik sir. I have better understanding of them now.

First you need to Understand What Modeling is

Modeling is mathematical or physical description of a physical process either using mathematical language or general logical frameworks or models

Hydrological modeling is mathematical description of Hyrological process (please Note Hydrological processes).

Hydraulics generally explains Physics of fluid mechanics and Dynamics.

description of physical process of Fluids using logical frameworks or mathematical languages.

Hello Adrij,

it depends on what you would like to find,

every model has its characteristics, might the input are shared in both models, but the outcomes would be different.

Dear Researcher,

Firstly, it is important to have understanding of the differences hydrology and hydraulics. Hydrology is the scientific study of the movement, distribution, and quality of water on the earth and other planets, including the hydrologic cycle, water resources and environmental watershed sustainability. However, Hydraulics is a topic in applied science and engineering dealing with the mechanical properties of liquids or fluids.

Fluid mechanics provides the theoretical foundation for hydraulics, which focuses on the engineering uses of fluid properties. However, the water balance equation is probably the closet that hydrology comes to having a fundamental theory underlying it as a science, and hence almost all hydrological studies are based around it. In terms of this, hydrology and hydraulics are different in their theoretical foundation. Moreover, hydrology is concerned with the distribution of water on the earth surface and its movement over and beneath the surface, and through the atmosphere while hydraulics is more focused on the movement of water beneath and over the surface. In other words, hydrology is with an entire scope of hydrological cycle while hydraulics only with a part of it. In terms of methodology, hydrology is more descriptive whereas hydraulics is more numerate.

Hydrological models are simplified, conceptual representations of a part of the hydrological cycle such as precipitation, evaporation, surface runoff, streamflow, and ground water. They are primarily used for hydrological prediction and for understanding hydrological processes. Two major types of hydrological models can be distinguished: stochastic and process-based models. Whereas, hydraulic modeling is used to evaluate important elements of free surface fluid flow. Generally, hydraulic modeling can refer to both numeric modeling (in which a simulation is performed on a computer), or physical modeling (where the physical flow geometry is scaled in such a way that it can be modeled in the laboratory).

have a look to the following link:

https://www.linkedin.com/pulse/difference-between-hydrology-hydraulics-john-kingsley/

Hope this will help,

Best wishes,

Mohammed.

If I understood your question, Mr. Roy; and as some have already answered, Hydraulic modeling is applied to the models wich represent the flow of fluids, usually trough channels and pipes.

Hydrological modeling, on the other hand, is a model of the different factors (slope, rainfall, land usage, etc...) that interact with each other within a watershed and originate a flow (Q) at a specific point of the watershed.