Hi, I’m Shahariar Ryehan 👋

A researcher studying non-linear acoustic Engineering in the realm of mathematics.

3D surface plot showing a complex mathematical function with oscillations along the x-axis and time axes labeled t and x, and vertical axis labeled u.

- Journal of Ocean Engineering and Science

A variety of solitons on the oceans exposed by the Kadomtsev Petviashvili-modified equal width equation adopting different techniques

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Although My research interest lies in SOLITON waves and Acoustics, sound and vibration engineering, I have a quiet interest in machine learning. My skills, publications, and previous projects are detailed on this site. Please get in touch with me if you are interested in collaborating.

sryehan@student.uc.pt

Smiling man with short dark hair, wearing a jacket, looking back over his shoulder outdoors under a cloudy sky.

Acoustic Engineerging

I am currently pursuing my MSc in Acoustic and Vibration Engineering at three prestigious European universities: University of Coimbra, UPV University of Politécnica de Valencia, and Aix-Marseille University. I received an Erasmus Mundus scholarship. The program will run until July 2026

Smiling man sitting by a waterfront with crossed legs, holding a magazine, with colorful hillside buildings in the background.

Coimbra, Portugal

Each country of Erasmus Mundus teaches me new culture

By the grace of almighty, I got the opportunity to learn different culture, language and food habits of different nationality of Europe and Asia

Want to see more culture

Collage showing speaker vibration analysis with graphs and 3D model on screens and a close-up of a person holding a Beyma professional loudspeaker driver.

Quality Education In EuRope

Msc. in acoustic and Vibration Engineering

The lab and thesis oriented study of the European Universtiies are quite impessive. Every courses teaches me the beauty of mathematics on the field of acoustic Engineering.

Want to know more about the education

Papers and preprints

Currently I’m working on Navier-Stokes equations. Although I researched on the variety of soliton by the Kadomtsev Petviashvili-modified equal width equation and the effect of Brownian motion and noise strength on solutions of stochastic Bogoyavlenskii model. I’ve also a pre-printed paper based on impressive and innovative soliton shapes for nonlinear Konno-Oono system.

Published Research Paper

-International Journal for Light and Electron Optics

The effect of Brownian motion and noise strength on solutions of stochastic Bogoyavlenskii model alongside conformable fractional derivative.

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Published Research Paper

-International Journal for Light and Electron Optics

A variety of solitons on the oceans exposed by the Kadomtsev Petviashvili-modified equal width equation adopting different techniques

Read full article

Example of my strengths

All t he codes are available to the author. Some of them are in GitHub. If you like to know more, please just share with me. This graphs available on GITHUB with animation.

Discovering Brownian Motion's Hidden Rhythm in 3D

The equation you referred to is the Space Fractional Stochastic Bogoyavlenskii Equation (SFSBE) and it models the Brownian Motion by changing the strength of the noise. The change of a particular constant, 'c', represents the changing over the constant in the equation in the sense of the Stratonovich interpretation.

Two mathematical equations involving variables a, b, x, y, t, z, and functions including hyperbolic tangent and square roots.

The upcoming research article I mentioned will be discussing equations that play a special role in modeling Brownian motion.

3D surface plot displaying a smooth peak with color gradient from blue at the base to red at the peak, labeled with axes x, t, and ϕ and correlation value r=0.7.

Hi, I’m Shahariar Ryehan 👋

Acoustic Engineerging

Papers and preprints

Example of my strengths

Want to join our Research Team?