MOMENTUM - April 2024 - 10

STUDENT GENERATION
Applicants are invited to submit their abstract
of 300 words or fewer online by October 7, 2024.
Later, the student will submit their paper to one
of the conference's regular technical sessions
and receive approval for the presentation of this
paper. Once approval is received, judging will
take place on-site during the conference on
Wednesday, May 14. Judges will listen to a
15-minute presentation, followed by a 5-minute
Q&A session related to the competing paper's
topic. A hooked cane won't pull you off stage if
you go over time, but students should still be
mindful and stay within their allocated 15-minute
slot.
Winning participants will be selected based
on paper quality, oral presentation, and Q&A
responses. Monetary prizes will be awarded for
the first-, second-, and third-place winners, with
an additional travel stipend awarded to the first-place winner. These awards will
be presented during the conference's closing ceremonies on Thursday, May 15.
At most, there are a dozen places remaining in the United States where a
person can go without hearing any human-caused noise. Moreover, NVH is a
primary contributor to driver fatigue, which causes about 328,000 vehicle
accidents each year. Do you have what it takes to shift those numbers?
MEET THE TWO-TIME WINNER
Pranav Sriganesh graduated with his Ph.D. in mechanical engineering in
December 2023-the same year he took home his second first-place win from
the Noise and Vibration Conference and Exhibition's student paper
competition. Today, he works as a post-doctoral scholar at The Ohio State
University, where he conducts experimental and computational research
aimed to improve the performance and acoustics of turbocharged internal
combustion (IC) engines.
A fitting role, considering the topics of Sriganesh's two winning papers, An
Experimental Investigation of the Acoustic Performance of a High-Frequency
Silencer for Turbocharger Compressors (2023) and Circumferential Variation of
Noise at the Blade-Pass Frequency in a Turbocharger Compressor with Ported
Shroud (2021).
Sriganesh graciously agreed to a Q&A session with MOMENTUM, where he
discussed the importance of his research, tips for future competitors, and
more.

Special shout out:
Pranab Saha, Ph.D.
Pranav Sriganesh, Ph.D., may not have become the
two-time student paper winner were it not for the
organizers' dedication. " The student paper
competition organizers, Dr. Pranab Saha in
particular, are to be applauded for not only
promoting student participation at the conference,
but also personally reaching out to students and
their advisors and encouraging us to compete, " he
said.
Saha, an NVH expert, really does a lot to
support SAE and its student members. As an
author, editor, and long-time SAE contributor, his
continued dedication embodies the spirit of SAE.
See for yourself: watch the video above for Saha's
valuable insights into the peer-review process
behind publishing technical papers. n
Your latest winning paper demonstrates the effectiveness of a novel silencer
in terms of insertion loss. Why is this area of research important?
With the ever-increasing demand for fuel-efficient lean-burn automotive
internal combustion (IC) engines, turbochargers have become essential in
contemporary powertrains. However, certain advanced turbocharger
compressor designs that improve performance and efficiency are barred from
being implemented in mass-produced passenger vehicles due to high noise
levels. For example, the ported shroud recirculating casing treatment for
compressors improves boost pressure and broadband noise at low- to midflow
rates but is notorious for unacceptable levels of narrowband/tonal noise
at the blade pass frequency (BPF) in the air induction system (AIS) of the IC
engine. High turbocharger shaft rotational speeds, on the order of 100 krpm,
push BPF to elevated frequencies where acoustic wave propagation is multidimensional.
Conventional silencers integrated into the AIS are rendered
ineffective in addressing these multi-dimensional waves since their design
assumes one-dimensional wave propagation, typical of low-frequency engine
noise. Although high-frequency noise is traditionally suppressed using
dissipative silencers that use fibrous materials, such a design is not
recommended in the AIS since it poses an imminent risk of fiber ingestion
resulting in damage to the impeller blades and the engine. The lack of an
effective silencing method for high-frequency noise from turbocharger
compressors highlights the importance of the paper on a novel reactive
silencer I presented at the 2023 SAE Noise and Vibration Conference and
Exhibition.
Do you have any advice for students who are planning on submitting their
papers for next year's competition?
The competition assesses technical writing and oral presentation of research
findings. It provides the participants with a great opportunity to improve their
command on both these fronts, setting them up for success in their
professional endeavors. I, therefore, strongly recommend that all students
10 April 2024
MOMENTUM

https://www.sae.org/publications/technical-papers/content/2023-01-1088/ https://www.sae.org/publications/technical-papers/content/2023-01-1088/ https://www.sae.org/publications/technical-papers/content/2023-01-1088/ https://www.sae.org/publications/technical-papers/content/2021-01-1044/ https://www.sae.org/publications/technical-papers/content/2021-01-1044/ https://www.sae.org/publications/technical-papers/content/2021-01-1044/ https://www.youtube.com/watch?v=jXwNGC9vWx8

MOMENTUM - April 2024

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